. Science-gossip. of trigonometricalterms is given at the end of the book. Perhaps onthe score of the mathematics required, the book willfind more favour with the medical reader. —J. Q. Rise and Development of the Liquefaction ojGases. By W. L. Hardin, x. +247 pp.,7iin. x 5in., with 42 illustrations. (New York andLondon : Macmillans, 1899.) 6s. If a curve were plotted having as its ordinates thesuccesses in the realm of the liquefaction of gases, andas its abscissal the years of the present century, it would St IE \< l GOSSJP. 245 show in al i i t I that thi m iextensi\ t ind imp irta
. Science-gossip. of trigonometricalterms is given at the end of the book. Perhaps onthe score of the mathematics required, the book willfind more favour with the medical reader. —J. Q. Rise and Development of the Liquefaction ojGases. By W. L. Hardin, x. +247 pp.,7iin. x 5in., with 42 illustrations. (New York andLondon : Macmillans, 1899.) 6s. If a curve were plotted having as its ordinates thesuccesses in the realm of the liquefaction of gases, andas its abscissal the years of the present century, it would St IE \< l GOSSJP. 245 show in al i i t I that thi m iextensi\ t ind imp irtanl worlstarting in 1S77 with 1 laitletets successes in liqui 11 ing er. 11-- dh idc thi : into tour ch ii»t; or I 1 to the lubject. 1 hi ils with thi 1 Itempts ,ti hquel iction. It i^ in thi ? pei d thaiThilorier and Natlerer are brought forward, ind theii. Long-Earkp Owls Nest.(Keartons Rarer British Breeding Birds,) oxygen and carbon monoxide, the subject has receivedthorough investigation at the hands of such men asPictet, Wroblewski, < Hskewski, Dewar, Linde,Hampson and others. The various reports and com-munications relating to the work, however, have beenmore or less scattered amongst the worlds literature,and the author of the present book has done goodservice in bringing them together in such an interest- work adequately discussed. Chapter three containsa detailed account of Andrews well-known experi-ments, and is therefore an important one, for, as theauthor states, with the observations of Andrews a newera begins. The difficult question as to the conditionsof gases at their ciitical points are here discithe views of various experimenters being put 246 SCIENCE-GOSSIP,
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