XLviii SCIEXCE PROGRESS. 



in its publication on his world-renowned lines. That portion of it 

 which deals with the architecture and mechanics of the bones as involv- 

 ing an analysis of their " cancellous" constituents is, nevertheless, in a 

 measure fascinating. 



The work is illustrated by four plates and twenty-one woodcuts, and 

 so far as we have been able to test its accuracy by appeal to actual 

 specimens we have found it reliable. A lengthy classified bibliography 

 of recent literature is appended, containing a list of papers which deal 

 both with the specific and cognate subjects. The author is careful to 

 explain in his introduction that this is incomplete, and that the whole 

 hand-and-text-book literature is omitted ; but, that notwithstanding, 

 we should have expected at least a reference to the investigations of 

 Zaaijer on the architecture of the human skeleton, to the recent remark- 

 able papers by Cope on " False Elbow Joints" and "The Mechanical 

 Origin of the Hard Parts of the Mammalia" (upon which we could have 

 wished the author's expression of an opinion), and to the allied observa- 

 tions of Scott and others, intimately associated therewith. The results 

 of the author's laborious researches will ere long find their way into 

 the text-books ; and now that the study of arthrology is being put upon 

 a sound basis, it is absolutely imperative that the time-worn misrepre- 

 sentations of the position of the limbs of the Eared Seals, the Walrus, 

 and the Bats, so long reproduced again and again in popular and ele- 

 mentary treatises, should give place to more accurate representations of 

 fact, if only as a necessary preamble to the treatment of the more exact 

 knowledge of which we are now becoming possessed. 



Papers and Notes on the Genesis and Matrix of the Diamond. By 

 the late Henry Carvill Lewis, M.A., F.G.S. Edited from his 

 unpublished MSS. by Professor T. G. Bonney, D.Sc, LL.D., 

 F.R.S. (pp. 6g, with 2 plates and 35 woodcuts). Longmans, 

 Green & Co., 1897. 



By the loving care of his widow these .valuable papers of the 

 highly gifted Professor Carvill Lewis — whose early death was so great a 

 loss to science — have been rendered accessible to geologists. The 

 circumstance that the proofs have passed through the hands of Pro- 

 fessor Rosenbusch of Heidelberg and of Professor T. G. Bonney of 

 University College, and that the latter has taken upon himself the 

 responsibilities of editorship, afford a sufficient guarantee that the ac- 

 curacy and scientific character of Professor Carvill Lewis's very in- 

 teresting memoirs have been maintained. 



The book includes a memoir entitled " On a Diamond-bearing 

 Peridotite and on the History of the Diamond," read before the British 

 Association at Birmingham in 1S86, and one on " The Matrix of the 

 Diamond," delivered before the same association at Manchester in 

 1877. In these memoirs the author, besides giving much valuable and 

 original information concerning the mode of occurrence of diamonds in 

 South Africa, establishes the existence and characters of a peculiar type 

 of rock to which he assigned the name of " Kimberlite ". 



