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the existence of a number of other elements of the same type, and Sir William succeeded in a short time in discovering helium. Three further elements of the same group--neon, krypton and xenon--were afterward discovered by Sir William, associated with Morris William Travers.
As the result of an investigation taken up by him, following Becquerel's discovery of the dark rays of uranium, Sir William made his greatest discovery--that of the apparent transmutation of one element into another. The gaseous emanation of radium, which at first had behaved as an entirely new body, showed after some time the lines of helium, and, finally, it was definitely proved that radium in its spontaneous decomposition produced helium in a perfectly regular way.
Following this up, Sir William originated a series of other investigations, some of which are not yet completed, but which may be expected to result in further achievements of a high order.
Sir William is the author of numerous publications and papers. Some of the most important of these are:
"The Molecular Surface-Energy of Liquids." "Argon, a New Constituent of the Atmosphere" (in conjunction with Lord Rayleigh).
"Helium, a Constituent of Certain Minerals." "Neon, Krypton, and Xenon." "The Transmutation of Radium into Helium" (with Mr. F. Soddy).
"The Discovery of the Constituents of the Air." Three Text-books on Chemistry. Many academic honors and various orders of distinction have been conferred upon Sir William Ramsay in recognition of his brilliant discoveries in chemistry. Among the orders are those of the Commander of the
๐ SIMILAR VOLUMES
and the University of Minnesota; in the late 1970s he was Reilly Professor of Combustion at Purdue University. Prof. Spalding has written many scientific publications from as early as 1949 with papers on thermodynamics, followed by publications on combustion, heat and mass transfer, boundary-layer