Illustrated booklet. Silver coloured cover, title in black print on front, along with Alfred Hospital logonon-fictionCollection of illustrations, photos, articles and memories relating to the Alfred Hospital school of nursingalfred hospital (melbourne)-history, nursing-history, nursing schools-history

A property illustration by Margaret Picken Commissioned by the real estate agency Woodards, Camberwell for the purpose of advertising 1,2,3/16 Alfred St., Burwood for sale in 1995. Made by using Rotring ‘Rapidigraph’ drafting pens with Rotring ink on Rapidigraph polyester drafting film, double matte. The suburb lines are believed to have been redrawn, making this property no longer in Burwood, but located in Glen iris. 1/16 Alfred St., Burwood is listed as having sold for in 1995 for $185,000 Trained as a cartographic draftsman within the mining industry, Margaret Picken is an artist who worked producing property illustrations for real estate agencies in eastern suburbs of Victoria from 1983-2005. Retiring from the industry as technological changes favoured coloured photography over illustrations, and commissioning companies over sole contractors.This artwork is of Historical Significance as a record of local domestic architecture.A black ink line drawing on drafters film by Maragret Picken, of 1,2,3/16 Alfred St., Burwood. Depicted are three one-story rendered houses on one block, one behind the other, situated back from a front lawn with a large tree on the right, and a driveway on the left leading to a garage There to two hole punches just below the upper edge An approximately 1.5cmx0.5 tape reside mark at the centre of the bottom edge A 1cm vertical line of dirty tape residue on the center of the upper edge. 1,2,3/16 Alfred St., Burwood Margaret Picken - 95 Woodards - c'wellwhitehorse historical society, schwerkolt cottage, housing, architecture, margaret picken, burwood, glen iris, house, garden

A property illustration by Margaret Picken Commissioned by the real estate agency Woodards, Camberwell for the purpose of advertising 11 Alfred St., Burwood for sale in 1990. Made by using Rotring ‘Rapidigraph’ drafting pens with Rotring ink on Rapidigraph polyester drafting film, double matte. The suburb lines are believed to have been redrawn, making this property no longer in Burwood, but located in Glen iris. This property is listed as having sold for in 1990, Trained as a cartographic draftsman within the mining industry, Margaret Picken is an artist who worked producing property illustrations for real estate agencies in eastern suburbs of Victoria from 1983-2005. Retiring from the industry as technological changes favoured coloured photography over illustrations, and commissioning companies over sole contractors.This artwork is of Historical Significance as a record of local domestic architecture.A black ink line drawing on drafters film by Maragret Picken, of 11 Alfred St., Burwood. Depicted is a one-story weatherboard situated back from a front lawn with a large tree, and a brick driveway on the left. Bushes are planted in front of the porch, and greenery on the left and right of the image. There to two hole punches just below the upper edge. 11 Alfred St., Burwood Maragret Picken -'99 Woodards - Glen Iriswhitehorse historical society, schwerkolt cottage, housing, architecture, margaret picken, burwood, glen iris, house, garden

After training as a Cartographic Draftsman within the mining industry, I worked as a property illustrator for real estate firms in the eastern suburbs of Melbourne for 23 years from 1983. I initially photographed houses with a Polaroid camera and made a 'thumbnail' sketch while there. The photos were used to scale off a sketch in pencil and then that sketch was overlaid with drafting film and the 'pen and ink' completed. The pens I used were the Rotring ‘Rapidigraph’ drafting pens. The ink was also made by Rotring (German).The film was ‘Rapidraw’, polyester drafting film, double matte. It takes a very fine line and doesn’t bleed. As well as house sketches, there were often floor plans and site plans ordered. Aerial sketches were ordered when the property needed an overall view. (Margaret Picken, 2020)This drawing is one of a series created by Margaret Picken for a range of real estate agents in Melbourne between c.1983 and c.2003. Each work is signed and dated by the artist.Gift of Margaret Picken, 2020Pen and ink drawing on drafting film of 67 Alfred Street, Kew by Margaret Picken.67 ALFRED ST., KEW / MARG. PICKEN '87architectural sketches -- houses -- kew (vic.), artist -- margaret picken 1950-, 67 alfred street -- kew (vic.)

After training as a Cartographic Draftsman within the mining industry, I worked as a property illustrator for real estate firms in the eastern suburbs of Melbourne for 23 years from 1983. I initially photographed houses with a Polaroid camera and made a 'thumbnail' sketch while there. The photos were used to scale off a sketch in pencil and then that sketch was overlaid with drafting film and the 'pen and ink' completed. The pens I used were the Rotring ‘Rapidigraph’ drafting pens. The ink was also made by Rotring (German).The film was ‘Rapidraw’, polyester drafting film, double matte. It takes a very fine line and doesn’t bleed. As well as house sketches, there were often floor plans and site plans ordered. Aerial sketches were ordered when the property needed an overall view. (Margaret Picken, 2020)This drawing is one of a series created by Margaret Picken for a range of real estate agents in Melbourne between c.1983 and c.2005. Each work is signed and dated by the artist.Gift of Margaret Picken, 2020Pen and ink drawing on drafting film of 69 Alfred Street, Kew by Margaret Picken.69 ALFRED ST., KEW / MARG. PICKEN '87artist -- margaret picken 1950-, architectural drawings -- houses -- kew (vic.), 69 alfred street -- kew (vic)

Paperback book. 360 pages. Photos of Alred Hospital on front and back covers. Numerous black and white photos within. Short biographies of many Alfred Hospital staff and departments. Includes indexnon-fictionincludes over 150 biographies (with Photos) of nursing and medical staff who served the Alfred hospital with distinction between 1945 and 1995. Includes reflections of an administratoralfred hospital, physicians, surgeons, nurses, doctors

paperback book, photos of Alfred Hospital on front and backcover, numerous photos withinnon-fictionBioraphies and photos of Alfred Hospital staff. Also includes history of specialty units, e.g. orthopaedics and psychiatry. Connections with Caulfield General Medical Centre, and the Alred's involvement in Vietnam and paua NewGuinea. detailes study of he development of the hospital's crest and mottoalfred hospital, ahnl, caulfield hospital, nurses, doctors, vietnam war, papua new guinea

Alfred 'Alf' Spencer grew up on a dairy farm run by his mother, west south west of Beechworth 'down Robertson Road', and was very well connected to the wider Beechworth area. In this oral history, he recalls his time driving the milk cart around Beechworth as well as the time he spent buying lollies and seeing the pictures. He talks extensively about working as a butcher at his brother's store, including how the butchers interacted with the rest of the town and the staff, as well as his time constructing roads and the pipe network of Beechworth. He discusses the dynamics of other workplaces around Beechworth, describing issues with how the local tannery treated its workers as well as how post-war migrants integrated across the town. He briefly discusses racial tensions between Chinese migrants and other miners on the goldfields. He also discusses the experience of health care in a rural area during his childhood. This oral history recording was part of a project conducted by Jennifer Williams in the year 2000 to capture the everyday life and struggles in Beechworth during the twentieth century. This project involved recording seventy oral histories on cassette tapes of local Beechworth residents which were then published in a book titled: Listen to what they say: voices of twentieth century Beechworth. These cassette tapes were digitised in July 2021 with funds made available by the Friends of the Burke.Alfred Spencer's oral history of his life around Beechworth during the 20th century is historically and socially significant to the cultural history of the region and Victoria. There is a lot of detail about workplaces, their staff, and how the resources of the town interacted. He explores themes that are important to Victorian history, such as migration. This oral history account is socially and historically significant as it is a part of a broader collection of interviews conducted by Jennifer Williams which were published in the book 'Listen to what they say: voices of twentieth-century Beechworth.' While the township of Beechworth is known for its history as a gold rush town, these accounts provide a unique insight into the day-to-day life of the town's residents during the 20th century, many of which will have now been lost if they had not been preserved.This is a digital copy of a recording that was originally captured on a cassette tape. The cassette tape is black with a horizontal white strip and is currently stored in a clear flat plastic rectangular container. It holds up to 40 minutes of recordings on each side.Mr Alfred Spencer /listen to what they say, beechworth, oral history, burke museum, spencer, alfred spencer, migration, post-war migration, goldfields, health care, farm, farming, dairy farm, black springs, butchers, meat processing, butcher, road, road network, labour relations

Paperback book with photos of the Alfred on front and back covers. Numerous balck and white photos withinnon-fictionBioraphies and photos of Alfred Hospital staff. Also includes history of the Alfred hospital nurse training, haemophilia care, heartlung transplants, trauma service, and involvement with the melbourne Gand Prixalfred hospital, ahnl, nurses, doctors, haemophilia, heart-lung transplants, trauma service, melbourne grand prix

Alfred James Ewart arrived in Australia from England in 1906. He had extensive knowledge of physiological botany. Ewart held the dual position of Government Botanist and the first Chair of Botany at Melbourne University (and any Australasian University), dividing his time between the National Herberium and the University. Black hard covered exercise book with brown tape spine. Includes handwritten notes, beautiful diagrams, clippings, etc. Contents include: Classification of Systematic Botany, Clissification of fruits, Monocotyledons, Dicityledons, Cannabineae,Quercineae, Ulmaceae, Salicineae, Euphorbiceae, Dialy-petaly, Nymphaeaceae, papaverceae, fumariaceae, Violaceae, Polygalaceae, Hypericineae, Cazyciflora, leguminosae, trifolieae, Umbelliferae, heterosciadieae, haplpzygieae, ericaceae, lentibularinaea, phanerogams .4) Photograph of Melaleuca squarrosa. Wild Flowers of Gippsland, photographed by Alfred Bock, Foster Street, Sale. Inside Front Cover : Anatomy. Histology. Physiology Front Page : A.J. Ewart. Botanical Lectures Advanced 1891-2aj ewart. alfred ewart, ewart, botany, alfred bock, illustration, plants, flora, alfred ewart, alfred james ewart, biodiversity

Paperback book, photos of Alfred Hospital on front and back cover. 380 pages with many blacka and whit photosnon-fictionContains biograhies and photos of Alfred Hospital staff. Also includes history of emergency and anaesthetic departments, war service of Alfred staff and information about Chevron Hotelalfred hospital, ahnl, nurses, doctors, emergency department, chevron hotel, war service

azure blue A4 cardboard cover, black typed print, Alfred Hospital badge, centre top, buff A4 typed insert, 91 pages + appendices A to C, glued bindingnon-fictioninternel document making recommendations based on The Marles Report alfred hospital, professional issues in nursing, marles report 1988, ahnl, alfred hospital nurses league

Earliest photograph of The Alfred immediately prior to its first treating patients on 6 March 1871.Black and White PhotographEndorsed on back in pencil Alfred Hospital 1870the alfred, 1870, hospital

A property illustration by Margaret Picken Commissioned by the real estate agency Fletchers Real Estate for the purpose of advertising 7 Alfred Rd, Burwood in 2000 Made by using Rotring ‘Rapidigraph’ drafting pens with Rotring ink on Rapidigraph polyester drafting film, double matte. This property is listed as having had unit 10 sell for $404,000 in 2000 Trained as a cartographic draftsman within the mining industry, Margaret Picken is an artist who worked producing property illustrations for real estate agencies in eastern suburbs of Victoria from 1983-2005. Retiring from the industry as technological changes favored coloured photography over illustrations, and commissioning companies over sole contractors.This artwork is of Historical Significance as a record of local domestic architecture.A black ink line drawing on drafters film by Margaret Picken, of 9 Tainton St., Burwood. A single story brick bungalow, with roofed porch wrapping around the font left corner of the house. A Picket and brick fence borders the front yard, and opens to a brick driveway on the left. Shrubbery growing in front of house and along the fence.7 Alfred Rd., Burwood Margaret Picken © 2000 Fletchers Real Estatewhitehorse historical society, schwerkolt cottage, housing, architecture, margaret picken, burwood, house, garden

The Alfred Hospital commissioned architect Charles Webb to design the hospital. [Picture submitted 1869. Open for inspection Dec 1870.]A historical record of the original Alfred Hospital designFramed photo print of original design of Alfred HospitalPerspective of original design of Alfred Hospital / by C Webb, Architectstreet view of building elevation, horse and carriage in foreground, alfred hospital, architects drawing

Colour photograph of Alfred Deakin Place looking towards the Art Gallery of Ballarat from the Arts Academy, alfred deakin place, arts academy, art gallery of ballarat, ballarat

HMS Nelson was a 126-gun ship of the line of the Royal Navy. Launched on 4 July 1814 at Woolwich Dockyard she was later converted into a screw ship in 1860, and was cut down to a two-decker and fitted with an engine of 2,102 indicated horsepower. In 1865, HMVS Nelson was given to the colony of Victoria as a training ship. She was outfitted and rigged for £42,000 and sailed for Australia in October 1867. Travelling via the Cape of Good Hope, she arrived in February 1868. She was the first ship to dock in the newly constructed Alfred Graving Dock in Williamstown, Victoria.Possibly the first training ship of the Victorian Navy which had a base in Swan Island in Queenscliffe.A black and white photograph of the sailing ship HMS later HMVS Nelson docked at the Alfred Graving Dock, Williamstown, 1872"Nelson" in Alfred Graving Dock Williamstown, Victoria 1872hms nelson, hmvs nelson, alfred graving dock, williamstown

Professor Ernest Edgar Kurth of the University of Tasmania, invented a faster, simpler and cleaner way to produce charcoal on a continuous basis during the second world war. The charcoal was used to produce a combustible gas in motor cars, as a substitute for petrol, which was heavily rationed. The first batch of charcoal was produced in February 1942 and continued until the end of the war. Wood from stringybark trees was cut into lengths and fed into a kiln which converted it into charcoal. The Kiln is located on Beenak Road, 7km north of Gembrook. It has great historical significance, particularly as an alternative supplier of fuel during the second world war. It is a State Registered facility, managed by the Friends of Kirth Kiln and the park is managed by Parks Victoria Green soft covered book of 150 pages, with a photo of 2 men and a boy out in the bush with 3 fires burning.Contains a Prelude about Ernest Edgar Kurth written by Alfred Klink (2013) and a Foreward by John Sullivan (Heritage Officer of Parks Victoria). There is an Acknowledgement page, with recognition given to the grant provided by the Department of Sustainability, Environment, Water, Population and Communities. e.e. kurth, kirth kiln, charcoal kiln, parks victoria

Illustrated book with light blue cover. Abbreviated title and authors name printed in silver on front cover and spine.non-fictionA history of nursing at Royal Prince Alfred Hospital, Sydney from 1882 to 1932royal prince alfred hospital -sydney-history, nursing-nsw-history, nurses

The Process of Making Pottery Decorating, Firing, Glazing, Making, Technical There is a rhythm and flow to clay. It can’t be done all at once! Even the making process! It can take weeks to get everything done, especially if you can only work on your pottery once a week! Even though we have three hour classes, it’s often just not enough time! Here is an overview of some of the processes so you have a bit more grasp on some of the technical stuff! Step One – Design There are SO many ideas out there for making stuff in clay! From delicate porcelain jewellery, through to heavy sculptural work and everything in between. Deciding your direction is sometimes not that easy – when you first start, try everything, you will naturally gravitate to the style that you enjoy! The options and variations are endless and can get a wee bit overwhelming too! Check in with me before you start to ensure your ideas will work, what order you might do things, how you could achieve the look you are seeking and any other technical data required! Step Two – Making Clay is thixotropic. This means that as you work with it, the clay first gets sloppier and wetter, before is begins to dry in the atmosphere. For most things, you simply can’t do all parts of the project at once. An example of work order might look like: Get last weeks work out from the shelves Prepare clay for today’s work – roll your clay, prepare balls for throwing, make the first stage of a pinch pot) Clean up last week’s work and put it on the shelf for bisque firing Check that you have any glazing to do – and do enough of it that you will have time to finish your main project Do the next step of your next project – there might be a further step that can’t be complete immediately, in that case, wrap your work well and put onto the shelves. Letting your work rest for a while can really help keep your work clean and professional looking. Many things require bagging under plastic to keep it ready for work the next week – put your name on the outside of the bag so you can find your work easily. We have stickers and markers. Consider how you want to decorate your work – coloured slip can be applied at a fairly wet stage (remembering that it will make your work even wetter!). Trying to apply slip to dry clay won’t work! If you want to do sgraffito – you will need to keep the work leather hard (a state of dryness where you can still work the clay with a little effort and a little water and care). Step Three – Drying Most of the time your work can go into the rack uncovered to let it dry out for the following week. If you want to continue forming or shaping you will need to double bag your work – put your work on a suitable sized bat and put the bat in a bag so the base of the bag is under the bat, then put another bag over the top of the work and tuck the top of the bag under the bat. If you want to trim (or turn) your thrown work the following week, it should also be double bagged. If your work is large, delicate, or of uneven thicknesses, you should lightly cover your work for drying. When considering the drying process, bare in mind the weather, humidity and wind! The hotter and dryer, the faster things dry and work can dry unevenly in the shelves – this can lead to cracking – another time to lightly cover your work for drying. Step Four – Trimming and Cleaning Up Your work is dry! It is called greenware now and it is at it’s most fragile! Handle everything with two hands. I often refer to soft hands – keep everything gentle and with your fingers spread as much as possible. Try to not pick up things like plates too much, and always with both hands! Before your work can be bisque fired it should be “cleaned up”. You work won’t go into the kiln if it has sharp edges – when glazed, sharp edges turn into razor blades! Use a piece of fly wire to rub the work all over – this will scratch a little so be light handed. Use a knife or metal kidney to scrape any areas that require a bit more dynamic treatment than the fly wire offers! Finally, a very light wipe over with a slightly damp sponge can help soften and soothe all of your edges and dags! Trimming thrown work: If you are planning to trim (or turn) your thrown work (and you should be), make sure you bag it well – your work should be leather hard to almost dry for easiest trimming. Use this step to finish the work completely – use a metal kidney to polish the surface, or a slightly damp sponge to give a freshly thrown look. Wipe the sponge around the rim after trimming, and check the inside of the pot for dags! Trimming slip cast work: Usually I will trim the rims of your work on the wheel the following day to make that stage easier, however you will still need to check your work for lumps and bumps. Last but not least – check that your name is still clearly on the bottom of your work. Step Five – Bisque Firing When the work is completely dry it can go into the bisque kiln. The bisque kiln is fired to 1000°C. This process burns off the water in the clay as well as some of the chemically bound water. The structure of the clay is not altered that much at this temperature. Inside the bisque kiln, the work is stacked a little, small bowl inside a larger bowl and onto a heavy plate. Smaller items like decorations or drink coasters might get stacked several high. Consideration is paid to the weight of the stack and shape of the work. A bisque kiln can fire about one and a half times the amount of work that the glaze kiln can fire. The firing takes about 10 hours to complete the cycle and about two days to cool down. Once it has been emptied the work is placed in the glaze room ready for you to decorate! Step Six – Glazing Decorating your work with colour can be a lot of fun – and time consuming! There are three main options for surface treatment at this stage: Oxide Washes Underglazes Glazes Washes and underglazes do not “glaze” the work – It will still need a layer of glaze to fully seal the clay (washes don’t need glaze on surfaces not designed for food or liquid as they can gloss up a little on their own). Underglazes are stable colourants that turn out pretty much how they look in the jar. They can be mixed with each other to form other colours and can be used like water colours to paint onto your work. Mostly they should have a clear glaze on top to seal them. Oxides are a different species – the pink oxide (cobalt) wash turns out bright blue for instance. They don’t always need a glaze on top, and some glazes can change the colour of the wash! The glazes need no other “glaze” on top! Be careful of unknown glaze interactions – you can put any combination of glaze in a bowl or on a plate, but only a single glaze on the outside of any vertical surface! Glazes are a chemical reaction under heat. We don’t know the exact chemicals in the Mayco glazes we use. I can guess by the way they interact with each other, however, on the whole, you need to test every idea you have, and not run the test on a vertical surface! Simply put, glaze is a layer of glass like substance that bonds with the clay underneath. Clay is made of silica, alumina and water. Glaze is made of mostly silica. Silica has a melting point of 1700°C and we fire to 1240°C. The silica requires a “flux” to help it melt at the lower temperature. Fluxes can be all sorts of chemicals – a common one is calcium – calcium has a melting point of 2500°C, however, together they both melt at a much lower temperature! Colourants are metal oxides like cobalt (blue), chrome (green through black), copper (green, blue, even red!), manganese (black, purple and pink) iron (red brown), etc. Different chemicals in the glaze can have dramatic effects. for example, barium carbonate (which we don’t use) turns manganese bright pink! Other elements can turn manganese dioxide brown, blue, purple and reddish brown. Manganese dioxide is a flux in and of itself as well. So, glazes that get their black and purple colours, often interact with other glazes and RUN! Our mirror black is a good example – it mixes really well with many glazes because it fluxes them – causes them to melt faster. It will also bring out many beautiful colours in the glazes because it’s black colouring most definitely comes from manganese dioxide! Glaze chemistry is a whole subject on it’s own! We use commercial Mayco glazes on purpose – for their huge range of colour possibilities, stability, cool interactions, artistic freedom with the ability to easily brush the glazes on and ease of use. We currently have almost 50 glazes on hand! A major project is to test the interactions of all glazes with each other. That is 2,500 test tiles!!!! I’m going to make the wall behind the wheels the feature wall of pretty colours! Step Seven – Glaze (Gloss or sometimes called “Glost”) Firing Most of the time this is the final stage of making your creation (but not always!) The glaze kiln goes to 1240°C. This is called cone 6, or midrange. It is the low end of stoneware temperatures. Stoneware clays and glazes are typically fired at cone 8 – 10, that is 1260 – 1290°C. The energy requirement to go from 1240°C to 1280°C is almost a 30% more! Our clay is formulated to vitrify (mature, turn “glass-like”) at 1240°, as are our glazes. A glaze kiln take around 12 hours to reach temperature and two to three days to cool down. Sometimes a third firing process is required – this is for decoration that is added to work after the glaze firing. For example – adding precious metals and lustres. this firing temperature is usually around 600 – 800°C depending upon the techniques being used. There are many students interested in gold and silver trims – we will be doing this third type of firing soon! After firing your work will be in the student finished work shelves. Remember to pay for it before you head out the door! There is a small extra charge for using porcelain clay (it’s more than twice the price of regular clay), and for any third firing process! Once your work has been fired it can not turn back into clay for millennia – so don’t fire it if you don’t like it! Put it in the bucket for recycling. https://firebirdstudios.com.au/the-process-of-making-pottery/Ceramics have evolved over thousands of years.Earthenware dessert plate, cream colour. Made by Alfred Meakin, England. Backstamped ‘Alfred Meakin England’. flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, alfred meakin, ceramics, earthenware, kitchenware

artist, architectural drawings, margaret picken, camberwell, housesartist, architectural drawings, margaret picken, camberwell, houses

A property illustration by Margaret Picken Commissioned by the real estate agency Woodards, Camberwell for the purpose of advertising 10 Alfred St., Burwood for sale in 1999. Made by using Rotring ‘Rapidigraph’ drafting pens with Rotring ink on Rapidigraph polyester drafting film, double matte. The suburb lines are believed to have been redrawn, making this property no longer in Burwood, but located in Glen iris. This property is listed as having sold for in 1999 for $380,000 Trained as a cartographic draftsman within the mining industry, Margaret Picken is an artist who worked producing property illustrations for real estate agencies in eastern suburbs of Victoria from 1983-2005. Retiring from the industry as technological changes favoured coloured photography over illustrations, and commissioning companies over sole contractors.This artwork is of Historical Significance as a record of local domestic architecture.A Black ink line drawing on drafters film by Maragret Picken, of 10 Alfred St., Burwood. Depicted is a one-story brick house situated back from a front lawn with a large tree, and a driveway on the right, leading to a connected carport. There to two hole punches just below the upper edge, and a approximately 1cmx1cm tape reside mark left of centre near the bottom edge 10 Alfred St., Burwood Maragret Picken - 99 Woodards - c'wellwhitehorse historical society, schwerkolt cottage, housing, architecture, margaret picken, burwood, glen iris, house, garden

Alfred Deakin (3 August 1856 – 7 October 1919) was an Australian politician who served as the second Prime Minister of Australia, in office for three separate terms – 1903 to 1904, 1905 to 1908, and 1909 to 1910. Before entering office, he was a leader of the movement for Australian federation. (Wikipedia)Black and white image of Alfred Deakin.portrait, alfred deakin, prime minister

Alfred Deakin (3 August 1856 – 7 October 1919) was an Australian politician who served as the second Prime Minister of Australia, in office for three separate terms – 1903 to 1904, 1905 to 1908, and 1909 to 1910. Before entering office, he was a leader of the movement for Australian federation. (Wikipedia)Black and white image of Alfred Deakin.portrait, alfred deakin, prime minister