The investigation of the x-ray appears early on to have been a priority research topic at the University of Melbourne’s School of Physics. This interest was sparked by the appointment in 1889 of Professor T.R. Lyle. Lyle, who was head of the school until 1915, is thought to have been the first person in Australia to have taken an x-ray photograph. A copy of this photograph can be found in the School of Physics Archive. For this particular experiment Lyle actually made his own x-ray tube. His successor, Professor Laby, continued to work with x-rays. During the 1920s Laby worked on the x-ray spectra of atoms and in 1930 he co-published with Dr. C.E. Eddy, Quantitative Analysis by X-Ray Spectroscopy. Also with Eddy, Laby produced the landmark paper Sensitivity of Atomic Analysis by X-rays. Laby went on to have an x-ray spectrograph of his own design manufactured by Adam Hilger Ltd. (see cat. No. 38). School of Physics, the University of Melbourne Cat. No. 22. Jacqueline Eager Student Projects Placement, Cultural Collections 2005 In 1913 Coolidge overcame the limitation of the narrow operating range of the gas X-ray tubes with the invention of the vacuum X-ray tube. A filament heated by an electric current directly releases electrons by thermionic emission. In thermionic emission, electrons are emitted from a metal surface directly by the application of an electric current to heat a wire filament. The electrons accelerate to the anode and produce X-rays. The anode has associated cooling fins due to the high temperatures attained by the release of kinetic energy by the electrons on colliding with the anode. Internal Glass sleeve: “A941/L2593/2821”

Captain John Mason came from Stirling in Scotland, arriving at Port Fairy in 1844. One year after James Atkinson obtained his Special Survey of the area. Thus his life covers all the history of Port Fairy when it was known as Belfast. He married Jane Murray in Portland in 1846 and they had 5 children, Jane died in 1855 and ten years later he married Ann Brown widow of Abijah Brown. They had no children and she died in 1887. In due course he became known as Captain Mason, he was not a sea captain, but captain of the Belfast Volunteers, a Rifle Corps formed in 1859 as a consequence of the Crimean War, and later reconstituted as the Belfast Volunteer Corps. For 40 years he displayed a remarkable versatility in his various occupations. Starting as an Innkeeper - he took over the Stag Inn from Captain Saunders in 1852, for 3 years. He then became a carpenter, stonemason, architect, estate agent honorary technical advisor to the Borough and treasurer to the Shire, and Savings Bank Secretary. They thought so well of John mason in Belfast that they elected him to the first Roads Board in 1853 and to the first Municipal Council in 1856. He was Chairman four times and with Councillors David Talbot and Joseph Whitehead designed the Council's Common Seal and the Motto "Commune Bonum".He was the first Mayor of the Borough in 1863 for a period of 7 weeks. He was responsible for the design, supervision or construction of many of the buildings in the town; most still standing today. He built the Rosebrook Bridge in 1855 and the first official Post Office ( a timber structure in Bank Street) in 1857, replacing it with a stone office in 1865. he built the Court house in 1859 and completed the breakwater between Rabbit Island and Griffith Island started by James Atkinson and John Griffith in 1849, also the first bridge over the Moyne river which connected with Battery Lane and the Bay. Among the many buildings associated with John Mason are Gobles Mill, Tynemouth Villa, 10-12 Princes Street, the Mechanics Institute, the Commercial Hotel, Yambuk and Mickey Bourke's Pub in Koroit. However, he did not build "Riverdale" in Gipps Street as is thought. He had a store and workshop on this site but sold the property in 1872 before the house was built. After an almost uninterrupted term as Councillor starting with the Municipality in 1856, John resigned from the Council in 1873. He well deserved the illuminated address they gave to him and the toast that they drank in the Bank Hotel champagne. Within the year he was working for the Borough as its engineer., surveyor, general supervisor and advisor of public works, simply as the man to whom all difficult problems were referred and at very little expense. John Mason was a great worker for his town and devoted himself unsparingly to the community. That his work was appreciated was shown by the way in which people rallied to his aid when, in the end, he found himself in financial difficulties and his reputation was challenge; arrested for embezzling from the Savings Bank of which he was the actuary in 1882. The money was repaid and the charges found not proven at his trial. He was an early member of the Loyal Prince Albert Lodge, and a founding member of the smaller Loyal Belfast Lodge in 1863. He was also a member of the Horticultural Society. Captain John Mason Died on the 14th of October 1891 (see also 62-04-046 photo)Sepia photograph on heavy cardStevenson & McNicoll photo. 108 Elizabeth Street Melbourne copies can be obtained at anytimedefence, captain, mason, carpenter, councillor, mayor