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Obituary Notices Prof No. 3626, APRIL 29, 1939 NATURE 711 The use of deuterium as an indicator was dis­ respiration, in which the heaviness of the expired cussed by Prof. H. S. Raper and Dr. W. E. van carbon dioxide was determined. Heyningen. The former referred to the work of Radioactive sodium was dealt with by Dr. Cavanagh and Raper, in which fats labelled with B. G. Maegraith, who mentioned experiments in deuterium were fed to animals and a study made which active sodium chloride had been injected of the rate of formation of the deuterium labelled into rabbits, and the distribution of the active lipins in the liver and kidney; the latter gave an sodium investigated. He suggested that this might account of the work of Schoenheimer and Ritten­ be used to estimate the extracellular fluid content berg et al. on deuterium as an indicator in the of the rabbit. study of intermediary metabolism, and referred Dr. W. D. Armstrong described experiments especially to the uses and limitations of the dealing with the exchange of phosphorus of the method. enamel of teeth and the blood using radioactive The use of heavy oxygen as an indicator was phosphorus. A very slow exchange was noticed, discussed by Dr. J. N. E. Day. He referred to indicating, not the formation of new molecules, the work of Aten and Hevesy, who examined the but exchange of phosphate between enamel and possibility of exchange of oxygen in sulphate, with blood. Mr. C. H. Collie referred to work of Collie other oxygen atoms present in the body, by and Morgan showing that radioactive sulphur can injecting heavy sodium sulphate into rabbits, and be used as an indicator. concluded that there was little or no exchange. Dr. D. Roaf described a method of producing Reference was also made to the work of Day and radioactive phosphorus by irradiation of tricresyl Sheel on the use of heavy oxygen in animal phosphate with slow neutrons. Obituary Notices Prof. Franz Werner (1902, 1903, 1905, 1929), Persia (1903, 1917, 1929, ROF. FRANZ WERNER'S death, which took 1936), South and West Africa (1902, 1913, 1915), P place in Vienna on February 18 after a short Anglo-Egyptian Sudan (1914, 1919, 1924), Guatemala illness at the age of seventy-two years, came as a (1903), the Andes (1916), China (1903, 1924), etc. shock to his numerous herpetological friends and col­ His contributions on Chamooleontidoo (1911), Euble­ leagues the world over. Born in 1867, Franz obtained pharidoo, Uroplatidoo, Pygopodidoo (1912) and Reptilia his doctorate at the University of Vienna in 1890 at Loricata (1933) in "Das Tierreich" ; on Amphibia the early age of twenty-three years, was appointed and Reptilia in Brehm's "Tierleben" (1913); and assistant in the First Zoological Institute of the on Amphibia (excluding Anura) in Ki.1kenthal's University, later rising to be professor there, and had "Handbuch der Zoologie" (1930-31) are models of a distinguished record as a teacher until 1933, when deep learning and lucid expression, and will make he became emeritus professor. For more than fifty him familiar to younger generations of herpetologists years, almost up to his death, he was zealously even when the charm of his personality is long engaged in zoological researches, being in the forgotten. foremost ranks of European herpetologists and a He was a patient, enthusiastic and indefatigable recipient of many honours. He was a corresponding worker for herpetology. B. C. MAHENDRA. member of the Vienna Academy of Sciences, an honorary doctor of the University of Athens, an honorary member of the American Society of Dr. E. H. Hankin Ichthyologists and Herpetologists, and a member of THE death on March 29 of Ernest Hanbury Hankin numerous other scientific societies. at the age of seventy-four years removes one who in Prof. Werner was a prolific writer, having more the early days of the development of bacteriology than a hundred papers, including some voluminous did much to forward its practical applications. The works, to his credit, the list including not only papers son of a clergyman, he was educated at Merchant on Amphibia and Reptilia, in which he was principally Taylors' School, at University College, London, and interested, but also titles on Orthoptera and scorpions. at St. John's College, Cambridge, of which he was Interested at first in morphological problems, he be­ a scholar and later a fellow, obtaining the M.A. and came more and more devoted to faunal exploration Sc.D. degrees. He also studied at St. Bartholomew's and herpetological taxonomy as the years went by. Hospital for a time, but did not proceed to a medical He undertook many travels for the sake of such qualification, and worked in Koch's laboratory in study, and made valuable contributions to our know­ Berlin and in the Pasteur Institute, Paris. He then ledge of the fauna of Greece and the lEgean Islands accepted an appointment as chemical examiner, (1902, 1912, 1927, 1930, 1933, 1935, 1936, 1937), analyst and bacteriologist to the North-West Pro­ Algeria and Morocco (1914, 1929, 1931), Asia Minor vinces and Oudh, India, and spent his professional © 1939 Nature Publishing Group 712 NATURE APRIL 29, 1939, VoL. 143 life at Agra. Dr. Hankin's earlier researches before especially for the insight displayed in his brilliant proceeding to India were mainly concerned with the interpretations of the results of the excavations of germicidal action of proteins of blood-serum and of Roman and Etruscan antiquities. cells, so-called 'alexins', upon which he published Among the honours which Pais received were several papers in the Proceedings of the Royal Society, honorary doctorates of the Universities of Oxford, Journal of Pathology and Bacteriology and Centralblatt Paris and Chicago, membership of the Institut de fur Bakteriologie. France, and in 1922 elevation to the rank of senator. In India, Hankin soon took up the study of cholera, isolated the cholera vibrio from contaminated well- and river-water, and so early as 1894 insisted Miss Ella C. Sykes that the disease was a microbial one and not a WE regret to record the death of Miss Ella Constance 'miasm'. He studied methods for destroying microbes, Sykes, which took place in London on March 23. Miss particularly the cholera vibrio, in the contaminated Sykes, who was educated at Lady Margaret Hall, water of wells, first by means of excess of lime, and Oxford, had been secretary of the Royal Asiatic afterwards with permanganate of potash, and his Society (1920- 26), and was a member of the Royal method of "pinking" wells continued in use until Geographical and Central Asian Societies, at whose the introduction of chlorination. In connexion with meetings she was well known as a traveller with cholera, he noted that the waters of the Jumna and first-hand and intimate knowledge of the land and Ganges possessed a natural germicidal action upon peoples of Persia in the earlier years of the century. the vibrio, which was not removed by filtration but She accompanied her brother, Major (afterwards was destroyed by boiling, but in spite of much work Brigadier-General Sir) Percy Molesworth Sykes, on on the subject, he was unable to discover the nature journeys of geographical and archreological interest, of the germicidal agent. This was not elucidated made when he was seconded from the British Army until many years later through the work of Twort in India to the consular service and was Consul­ and of d'Herelle upon the filterable lytic agent that General in Kerman. On one occasion she and her destroys bacteria, the bacteriophage. Hankin also brother rode on horseback from the Caspian to India, published several papers dealing with plague, the and in 1915 they travelled together in Chinese plague bacillus, and the relation of insects and rats Turkestan and the Pamirs. Her experiences in Persia to its spread. were embodied in "Through Persia on a Side-saddle" Besides his bacteriological work, Dr. Hankin's and in "Persia and her People". She was also joint other pursuits included observations upon the prob­ author with her brother of "Through Deserts and lems of flight, studied mathematically, experimentally Oases of Central Asia". Miss Sykes visited Canada with kites, and by observations on the flight of birds, to investigate the question of the employment of which were embodied in a small work "Animal educated women there on behalf of the Colonial Flight". He also published "Methods of Design in Intelligence League. "A Home-Help in Canada" Mahomedan Art", an analysis of geometric patterns, records her experiences. especially of those that adorn the Taj Mahal. R. T. HEWLETT. WE regret to announce the following deaths : Prof. Ettore Pais Dr. J. Anderson, formerly lecturer in bee-keeping WE regret to record the death of Prof. Ettore in the North of Scotland College of Agriculture, aged Pais which took place recently in Rome at the age sixty-six years. of eighty-three years. Prof. Pais was a historian of Prof. W. Cramp, professor of engineering in the international reputation, widely known as one of the University of Birmingham, on April 20, aged sixty­ foremost authorities on the history, laws and customs three years. of ancient Rome and the early history of the peoples Mr. E. W. Fraser-Smith, secretary and treasurer of of the Italian peninsula generally. the North East Coast Institution of Engineers and Ettore Pais was born in 1856 and educated at the Shipbuilders since 1911, on April 5. University of Florence, afterwards studying under Mr. H. J. George, University lecturer in chemistry Mommsen in Berlin. His first appointment on his in the University of Oxford, on April 19. return to Italy was as curator of the museum at Prof.
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