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 A modern X-ray tube differs little from the original Coolidge tube. A minor modification is the rotating anode type that extends the life and increases the available power of the tube by presenting a new portion of the anode when required. “P125/20/40/NrF038803 (?) SIEMENS-REINIGER-WERRE AG ERLANGEN Eigen filleung (?) mind. 0,7 mm AL” On rotating shaft: “FO/33803” On cathode: “23C”

Drawing with Longitudinal Section through the Saddle Reefs along portion of Hustler's Line of Reefs, Bendigo. Map shows the depth of the mines, reef numbers and Datum 700 ft above sea level. North and South is also noted on the map. Map signed by H. S, Whitelaw, Underground Survey Office, Bendigo, September 1913. Bulletin No 33, Plate No XXXIV. Bendigo Creek, Ironbark Creek and Long Gully are also noted. Mines are: Fortuna Hustlers, Hustler's Royal Reserve No 2 Main Shaft, Hustler's Royal Reserve No 2 Park Shaft, Royal Hustler's, Imperial Hustler's, Extended Hustler's Freehold, Great Extended Hustler's Tribute (Pups), Old Shaft, Great Extended Hustler's Reef No 2, Great Extended Hustler's Main Shaft, Old Shaft, Hustler's Reef, Hustler's Reef No 1, Comet, K. K., United Hustler's & Redan, Old Shaft and Hustler's Consols. Has Geological Survey of Victoria Crest and underneath is: H. Herman, Director, W. Dickson, Secretary for Mines, The Hon. J Drysdale Brown M L C. Minister of Mines.Geological Survey of Victoria Crestmining, parish map, hustler's reef maps, hustlers line of reefs, bendigo creek, ironbark creek and long gully are also noted. mines are: fortuna hustlers, hustler's royal reserve no 2 main shaft, hustler's royal reserve no 2 park shaft, royal hustler's, imperial hustler's, extended hustler's freehold, great extended hustler's tribute (pups), old shaft, great extended hustler's reef no 2, great extended hustler's main shaft, old shaft, hustler's reef, hustler's reef no 1, comet, k. k., united hustler's & redan, old shaft and hustler's consols.h s whitelaw, underground survey office bendigo september 1913, bulletin no 33 plateno xxxiv, mi