When Hewitt introduced his regulating stopcock in 1887, attempts were made to dilute the nitrous oxide with air and so obviate the element of asphyxiation. The method was to be seen in London, mainly in dentistry and minor surgery, so late as 1930. It was not very successful. To give even 10% of oxygen (which is not enough) the gas-mixture must contain 55% of air and 45% of nitrous oxide. The latter is thus so diluted by atmospheric nitrogen as to be incapable of producing anaesthesia except by asphyxiation. "Gas-air" was confined to analgesia, for example in midwifery. (Source: Penn catalogue)Brown leather facemask attached to metal inhaler and stopcock device that has been sectioned to reveal its inner workings. The various exposed channels have been painted either green, red, blue or purple.Engraved into side of stopcock: HEWITT'S / N20-02 / 1895 / G. Kaye sect. 1952. •Stamped into other side of stopcock: [indecipherable] BARTH & CO. / SOLE MAKERS / 54. POLAND STREET LONDON.W.frederic hewitt, stopcock, nitrous oxide, oxygen, gas-air

Binder containing: Article, Clipping of Warrant Officer R. Harris. 4 maps of verious locations in Vietnam. Citation. List of US personnel. 20 pages of handwritten notes and diagrams. 15 pages of typed notes marked Confidential. 25 pages stamped with Confidential and hand written by Robert G. Harrisbinder, vietnam

Black writing: yellow ribbon with green medal. Green border, red stamp ornate. Laminated Certificate awarded to WO Robert G Harris - 41335, royal Australian Army. Writing is in Vietnamese Langueageaug-duug boi einb

Program for a supper to celebrate Councillor Burnett Gray's 30 years service with St Kilda Council, held at St Kilda Town Hall on 21 August 1944. It contains the toasts and menu. Burnett Gray served on St Kilda City Council from 1914 to 1915 and from 1920 to 1948 and was Mayor from 1922 to 1923 and from 1926 to 1927. He was the first returned soldier to serve as mayor of any Victorian city.Cream coloured textured card, enclosing a glossy sheet of paper, folded and fastened with an orange ribbon and printed in gold and green. Inserted into the back of the card is a gold coloured piece of paper on which the initials R G in gothic font, with a patterned border, are printed in red.st kilda mayoral function, burnett gray, st kilda council

Weir Pumps - these types of vertical pumps were used extensively with both land and marine steam pumps. The pumps were also used for various duties from pumping oil fuel and feed water for boilers, to draining bilges on steam ship[s They are a single cylinder, double acting vertical pumps used by G. & J. Weir Ltd. , of Cathcart, Glasgow Historic - Weir Vertical PumpSteam Driven Weir Pump Green and Black with metal parts.No. B49717puffing billy, weir, steam pump

Shield prepared for the senior road aggregate races for the Geelong West Cycling Club which then became the Geelong Cycling Club. The 2005 winner - Leigh Howard, was a professional rider with Team Colombia in 2010 and is currently on the pro tour with Orica Green Edge (commencing 2012). He was the World Omnium Champion in 2009, and World Madison Champion 2010 and 2011.This shield records the cyclists who were high achievers in the Geelong region.A mahogany coloured wooden shield with brass plated plaques containing inscriptions of winners of the senior road aggregate of the Geelong West Cycling Club during the years 1998-2002. There is an emblem of a cyclist and a banner at the top centre of the shield."Geelong West Cycling Club/1998/Geoff Robertson/1999/Jason Sterling/2000/Geoff Robertson/2001/Geoff Robertson/2002/Geoff Robertson/2003/James Stewart/2004/Daryl Suter/2005/L. Howard/G.Mathieson"geelong west cycling club; geoff robertson; jason sterling; james stewart; daryl suter; l. howard; g. mathieson;

Medals were presented up until the year 2002 at the Geelong West Cycling Club. Medals are a recognition of achievement in competitive cycling events.2 x Medals - one in bronze metal conglomerate, the other in silver metal conglomerate. The front of the medals depict an olive wreath around the circumference, and has a racing cyclist painted on an enamel disk in the centre. On the reverse sides, inscriptions appear inside an olive wreath decoration. Each medal has a green and yellow ribbon attached to it. Medal 1 - "GWCC 1994/Junior Time Trial/Men/D. Marchant" Medal 2 - "GWCC 1994/Junior Time Trial/G. Spaulding"medals, gwcc, jnr time trial, d marchant

Else Oertel and her daughter Else-Lore were interned in Camp 3A from 1940. Her husband was not interned as he was on a business trip to Germany when war broke out. Olive green linen cover with embossing on edge and spine. Gold printing on spine. 256 pages. The front of the original dust cover has been attached to the inside of the book. It is colour picture of four children in a farmyard with chickens and two cats. Painted by Ettel Kate Burgess.Hand written inside: Else-Lore Oertel from the Red Cross, Christmas 1942, Tatura Internment Camp 3A. else lore hukins, children's books, camp 3, christmas, red cross, internees

Made by internee at Camp 3, TaturaHandmade wooden wall plaque. Two small pin holes at the top with length of cotton threaded through as hanging device. Adhered to plaque :handcarved white, yellow centred flower in middle and 'banner' at top with, in German script, two words, translating as "love me". Painted leaves on plaque in green.Wied, Nellyplaque, wood, bissinger g, wied k and n, camp 3, tatura, ww2, handcrafts, woodcarving

Made by internee at Camp 3,TaturaHandmade wooden wall plaque with two 'pin' holes at the top for hanging. Adhered to plaque : Handcarved shaped heart painted red in centre, shaped 'banner' with 2 words written on it in German, translating as "love me" at top. painted on base either sideof heart is a blue flower with yellow centre and green leaves.Wied Gplaque, wood, bissinger g, wied k and n, camp 3, tatura, ww2, handcrafts, woodcarving

Made by internee at Camp 3, TaturaHandmade wooden wall plaque with two 'pin' holes at top with length of cotton threaded through for hanging. Adhered to plaque : handcarved wooden horseshoe, painted blue. Shaped 'banner' above with 2 words written on it in German, translating as 'good luck'. A small red flower has been painted on the plaque between ends of horseshoe with green leavesWied Kplaque, bissinger g, wied k and n, camp3, tatura, ww2, camp 3, handcrafts, wood, carving

Hand painted by internee at Camp 3. Returned from GermanyArmy issue tin dinner plate, hand painted pale green with decorative edging of pink flowers, green stems and similar centre pieceplate, tin, dinner, rippert c, kuebler g, camp 3, tatura, ww2 camp 3, domestic, table, setting

Handpainted by internment at Camp 3. Plate returned from GermanyArmy issue hand painted light tan colour tin dinner plate, circular with decorative patterned edging in black, green, red and whiteplate, tin, rippert c, kuebler g, camp 3, tatura, ww2 camp 3, domestic, table, setting

Olive board covered book with green binding tape, used by Bob Gerring in studies, whilst in Form IB at Williamstown High School in 1945.See jpg above for inscription inside front cover.williamstown high school, 1945, textbooks, robert gerring