1918
NllLY 11OOKS.
centage of iodine" (1). 1 3 2 ) : 4 o / o o Ixvmies four Iicr ccnt. (1). 5 2 7 ) ; "Ii!~pergluk~iriiie" is given ;is glucohernia (I). 309). I t is unfortuiiatv t h a t the word "alhuinins ' ' has beeii retained in the generic seiise I)!, the translators, and t h a t nucleoproteiti appears i n one part of the book. \\it11 proteiv in another. T h e adopted rules of spelling ha\-e not lieen rixorously follouwl. Thus of t\m protaniincs, one Iiecornes salrniizr. the other clupeiti (11. 1\30), Such details are however, of minor account i i i a book which deserves cordial recoiiirnentlatioii for unusual novelt!. i n Imseiitation, entertaining originality, and suggestil-e points of view. 1i.e ncctl more books which propound problems as well as solve tlieni. I,.lF . \ Y I W ' X 1< . &I12 I\'L)€CI,. A Text Book of Inorganic Chemistry.
BY A. F. Hor,LEhr.I?J. Issued in English in co6pcr:ttion with H. C. Cooper. Third English edition, partly rewritten, Svo, 502 pp., 81 figures. viii New York: John Wiley and Sons. Price, $2.50.
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According t o the statement of t h e preface, this edition represents a thorough revision of t h e work b!. both t h e Ilutch author and the American editor. The portions on the phase rule, spectroscopy, radioactivity, iron-carbon system and metal-ammonia compounds have been largely rewritten and the chapters on colloids, experimental deterlninatioii of equivalent weights and unity of niatter are entirely new. I n \ . i t s \ \ of what has been written by some chemists of emineiit authority i t is refreshing to find one who states t h a t i t is the province of science to . planation of phenomena a n d t h a t the \,arious attempts at explanations constitute the most important part of science." little further 011, however, we find the statement t h a t "the principle oi the inclestriictil)ilit!. o f niatter lies originally at the basis of our thinking. I t is entirely iiicorrect to suppose t h a t it was established by experinientation." 'Vliis can scarcely be considered a s true, 1iist.orically--nor is it entirely consistent with rccent speculations about t h e rclntioii between matter and energ!.. \\,hicli arc referred to, later. in t h e h i l i . 'l'he I)ook as a \\hole gives L: \.cry satis factory presentation of furitlamental principles and oi tlic more iiiiportiint facts o f chemistry, including important recent discoveries ant1 suital,lr reference to some o f !he newest speculations connected w i t h tliesc. "
It'.
N.
Die Lagerung der Atome im Raume. Vox J . H. VAN'T HOFF. Dritte umgearbcitvtc. und vermchrtc Auflage. T'ieweg u. Sohn. 1908, S. xv A 147, Prris geheftet,
M. 4 . 5 0 ~ I n the preparation of this ne\\ edition 1)rof. \.an't IIolf was assisted by Dr. Just. 'I'he text of the preyious edition has been largely rewritteii and niucli new material added, so as to bring i t well u p to date. 'l'his is particularl!. true i n the fields of enzyme action and of the stereoclieniistr!. of elements other than carbon. ?'he chapter 011 cyclic IJinding no\v
