Common Opal is a mineraloid that is non crystallising and is classed as an amorphous silicate, the chemical composition for Opal is SiO2 nH2O. Opals can develop in weathered sedimentary rock typical in arid regions where limited water enters small gaps in the rock, and the silicate is hydrated. Common opals, unlike precious opals, do not exhibit ‘play of colour’ in which the colour appears to change depending on the angle of view. While precious opals are highly valuable and cut as gemstones for jewellery, common opals can be cut into inexpensive gemstones and are also mined for various uses including as ingredients in ceramics, insulation, fillers, and abrasives. The source of this common opal specimen is unknown, but common opals are found around the world, notable deposits are found in Queensland, South Australia, New South Wales, Peru, Kenya, Nevada, Oregon, and Mexico. This common opal specimen is of historic and scientific significance due to its donation in 1868 as part of the Geological Survey of Victoria and as a typical example of uncut common opal. This specimen is part of a larger collection of geological and mineral specimens collected from around Australia (and some parts of the world) and donated to the Burke Museum between 1868-1880. A large percentage of these specimens were collected in Victoria as part of the Geological Survey of Victoria that begun in 1852 (in response to the Gold Rush) to study and map the geology of Victoria. Collecting geological specimens was an important part of mapping and understanding the scientific makeup of the earth. Many of these specimens were sent to research and collecting organisations across Australia, including the Burke Museum, to educate and encourage further study.A palm-sized amorphous (non-crystallising) hydrated silicate mineraloid specimen in shades of brown, orange, and white.Existing label: Common Opal / Locality unknowngeological specimen, geology, geology collection, burke museum, beechworth, common opal, opal, mineraloid, amorphous silicates, hydrated silicate

Dr Mitchell Henry O'Sullivan worked in the Victorian country town of Casterton as a general practitioner from 1919 until his death in 1977. He also practiced obstetrics. His son, Dr David More O'Sullivan donated the obstetric bag and its contents to the College in 1999. The bag and contents are a unique time capsule of the type of instruments and pharmaceuticals used in the inter-war period. 'Horrocks' saline infusion apparatus. Consists of white, metal lidded oval shaped case [169.1], containing a gauze insert, a glass intravenous drip chamber [169.2], straight intravenous needle [169.3], wire insert for the needle [169.4] and rubber tubing [169.5]. Inscribed inside box, "Down Bros., St Thomas Street, Borough of London."hydration

Dr Mitchell Henry O'Sullivan worked in the Victorian country town of Casterton as a general practitioner from 1919 until his death in 1977. He also practiced obstetrics. The gladstone bag and contents are a unique time capsule of the type of instruments and pharmaceuticals used in the interwar period. His son, Dr David More O'Sullivan donated the obstetric bag and its contents to the College in 1999.Seven tablets of 'Soloid' sodium chloride compound [192.3-192.9], in a glass vial [192.1]. Vial is amber glass, with label of "Burroughs Welcome & Co" "Soloid/Saline Compound", and has a cork stopper [192.2]. Vial label gies the contents of each tablet along with directions for use. hydration

Experiments with intravenous anaesthesia were undertaken in 1872 using chloral hydrate. The high mortality rates discouraged further experimentation until the early 20th Century. Thionembutal, or Pentothal Sodium, was one of these early developments. This ampoule has "Experimental" stamped on it. It has come directly from the manufacturing process. Pentothal Sodium is its trade name. It is now more commonly known as thiopentone.Glass ampoule of Pentothal Sodium (Thiobarbiturate No. 8064) 1.0 gm with large yellowed white label.Printed in black ink on label: Experimental / A 512738 / Abbott Laboratories / North Chicago. Ill., USA.pentothal, sodium, thionembutal, thiopentone, experimental, drugs, intravenous, anaesthesia, anaesthetic, john lundy, ralph waters

During prestige, long distance train journeys some carriages had air-conditioning, and the majority of passengers had to brave unheated carriages. To offer some comfort during the winter months, the non-air-conditioned carriages were provided with footwarmers. These were metal containers roughly 100 mm thick and 300 mm wide, and about 750 mm long, which were filled with salt crystals (concentrated crystalline hydrated sodium acetate). The footwarmers were covered by sleeves of thick canvas, and two footwarmers were usually placed in each compartment of non-air-conditioned carriages. To activate the chemicals, the footwarmers were heated almost to boiling point. This was done by removing the canvas sleeves and placing the footwarmers in a large bath of very hot water. After they had been heated, they were removed from the bath and the sleeves refitted. They were then ready to be placed in the carriages. The McLaren patent foot warmer was used on railways in New South Wales, Queensland, Victoria and South Australia as well as South Africa and New Zealand. It was during the 1901 royal visit by the Duke and Duchess of Cornwall that these foot warmers were first used in New Zealand in the royal carriage. Before railway carriage heating was introduced, McLaren patent foot warmers were placed on the floor of New South Wales government railway carriages from 1891 to provide a little passenger comfort. The rectangular steel container worked a bit like a hot water bottle but instead of water contained six and a half kilograms of loosely-packed salt crystals, (concentrated crystalline hydrated sodium acetate). This was permanently sealed inside the container with a soldered cap. After the foot warmer was heated in vat of boiling water for about one and a quarter hours the crystals became a hot liquid. (The melting point for sodium acetate is 58 degrees). There was a whole infrastructure of special furnaces set up at stations for the daily heating of foot warmers. By 1914 the Victorian railways had 4,000 foot warmers in service and by 1935 there were 33 furnaces at principal stations to heat them. After about 10 hours the container was picked up by the handle and given a good vertical shake which helped the cooled liquid reform into a solid mass of hot crystals. Staff or sometimes passengers shook them en route when the foot warmers began to get cold. However, as they were heavy this was only possible by fit and agile passengers. At the end of the journey the containers were boiled again for reuse on the next trip. Sodium acetate railway foot warmers were introduced in Victoria in 1889, Adelaide to Melbourne express in 1899. "Shaking up" on this service took place at Murray Bridge and Stawell on the tip to Melbourne and at Ballarat and Serviceton on the trip to Adelaide. The use of foot warmers began to decline in New South Wales from the 1930s with the first trial of carriage air-conditioning in 1936, steam heating from 1948 ad LP gas heating from 1961. By the early 1960s the main services using foot warmers were the overnight mail trains. info from : http://www.powerhousemuseum.com/collection/database/?irn=67564#ixzz4UBNzVf6t Under Creative Commons License: Attribution Non-Commercial There was a whole infrastructure set up at stations for the daily heating of foot warmers in special furnaces. In Victoria alone in 1935 there were 33 heating works.Historic - Victorian Railways - Carriage Heater - Foot warmerA rectangular-shaped stainless steel casing with a welded seam down the back and welded ends. There is a handle at one end for carrying and shaking. Inside the foot warmer are two baffle plates and three trays to contain the sodium acetate. There was a cast-iron ball in each internal compartment. puffing billy, victorian railways, carriage haeter, foot warmer, passenger comfort, station furnace, railway ephemera, early heating methods

Chicory was mixed with coffee to reduce the amount of coffee bean required to be used. This coffee "substitute" was due to the repeated fluctuations in availability of coffee beans (and price fluctuations) in the USA in the late 1800s and early 1900s resulting in the search for substitutes and additives to bulk out the available supplies. This was especially so during times of the major World Wars. Chicory was an excellent choice of fillers as it did not greatly influence the strong coffee bean taste. The first choice in USA households was coffee not tea and the influence of the American servicemen's thirst for coffee was a major thrust into the Australian "colonial" preference for a "cuppa" tea. Rural areas took longer to acquire a coffee "break" but with more and more subliminal advertising through "American" films the rural regions developed a growing preference for coffee, however the tea break alias "smoko" has lingered on.This coffee and chicory blend tin container is very significant to the Kiewa Valley in that it demonstrates that even in rural regions of Australia tastes and drinking preferences have changed by subliminal advertising as time goes by. The American "influence" whether by the "invasion" of friendly troops during the major wars or the avalanche of "American films" has altered some of the "dinky-di" Australian "true blue" tastes and mores. The availability of "straight " coffee supplies to rural areas was also in proportion to the level of all weather transport routes. In the late 1800's and early 1900's road freight had to contend with dirt roads, flooded roads, bush fires and grazing cattle/sheep in rural areas. The easier access that city households had with regard to replenishment of food and drink products, up until the mid 1900's, was severely retarded in rural areas. This extensively rusted tin of "Bushells Blue Label" Coffee and Chicory has an octagonal shaped body with a "push/pull" lid(tin).Three sides has reproduced painted ladies in "Roman dress" ladies picking the coffee beans. There is no reproduction of any chicory roots. There are two "Indian dressed" field workers(pickers) with turban head dress. On one side of the tin is "directions of use, net weight and manufacturer details."Bushells Coffee & Chicory", "NET 1-Ib. weight", " No. 144" "Under the Pure Food Act N.S.W. 1938" "by Bushells Ltd. No 144"chicory / coffee drinks, tin hydrated drink, rural food and drink consumption patterns, tinned food and drink