APPENDIX I. 

 NOTICES OF BOOKS. 



Lehrbuch der Entwicklungsgeschichte des Menschen und der Wirbelthiere. Von Prof. Dr. O. 

 Hertwig (Fiinfte theilweise umgearbeitete Aurlage). Jena : Gustav Fischer, 1896. 



The fact that this admirable work has entered upon a fifth edition in its ninth year is 

 sufficient testimony to its success. The plan of the book remains unaltered, but the whole 

 has been brought up to date. The sections dealing with the Structure of the Chorion, the 

 Development of the Intermediate Germ Layer in Reptiles and Mammals, and the Genesis of 

 the Cellular Elements of the Blood, are conspicuous among those which have received 

 attention, and the recent work of Keibel, Will, von Kupffer, Kundrat and Engelmann, 

 Leopold, Minot, and others, has been largely laid under obligation. This fifth edition is, 

 however, most noteworthy for the fuller treatment of cytological topics, there having been 

 added sections dealing with the role of the Centrosome in Fertilisation and the Reduction 

 Division, and a short chapter of eight pages upon the " Mosaic Theory " of Roux and recent 

 experimental work which bears upon it. Twenty-two illustrations have been added ; but, 

 seeing how great has been the success of this work, we had wished for the replacement in late 

 editions of the hundred and one well-worn illustrations which nauseate us by their reappear- 

 ance in text-book after text-book. Rathke's time-honoured diagrams of the development of 

 the aortic arches are once more reproduced in full, but the work of Boas, Hochstetter, and 

 Zimmermann, upon the pre-pulmonary arch, which has undermined them, is mentioned only 

 in small type. This is but one of several instances in which recent work of a far-reaching 

 order is insufficiently transcribed, and in some cases the incorporation in the " Literature " of 

 titles of important papers has been considered sufficient recognition of their authors' work. 

 We regret the introduction of Fol's Quadrille des Centres (notwithstanding the mention of the 

 adverse results obtained by Boveri, Wilson, and Mathews) and of the would-be corroborative 

 statements of Guignard. This and certain other very debatable topics might well have 

 been left aside, in preference say for a fitting recognition of substantial observations such as 

 Mitsukuri's upon the Mesoderm and Ccelom of the Chelonia and Haacke's and Giacomini's 

 upon the allantoir placenta of the Lacertilia. The scanty recognition of the Invertebrata has 

 been regarded as an objection to this work, it having been looked upon as ignoring 

 the great middle series which lie between man and the higher animals and the lower 

 organisms. This opinion appears to us to have arisen from a misconception of the author's 

 aims, and it is certainly less justified of the present edition than any of its predecessors. 

 The book deals professedly with the broader aspects of the organology of the vertebrata 

 and with cytological questions which largely border on the physiological and the study 

 of first principles ; and in these associations the lower animals appear to us to have 

 received ample consideration at the author's hands. His work is emphatically one for 

 medical students, and as meeting their demands it appears to us unequalled. It is now well- 

 established, and if the author would give us an edition in which illustrations, new and 

 numerous, should be of the same excellence as the text, he would confer a boon on medical 

 education. 



Evolution in Art: as Illustrated by Life-Histories of Designs. By Alfred C. Haddon, 

 Professor of Zoology, Royal College of Science, Dublin. With 8 plates and 130 figures 

 in the text. The Contemporary Science Series. London : Walter Scott, Limited, 1895. 



There is no training for a young biologist equal to a sojourn amongst the strange plants 

 and animals of a tropical region. Darwin in the Challenger, Huxley in the Rattlesnake, 

 received such a training and acquired the methods and material that made their reputations. 

 It is an education that gives the mind of the scientific worker a broad bent, and makes many 

 subjects have an interest for him. Before Professor Haddon made his journey to British New 

 Guinea and the adjacent coasts he was known as a zoologist, a geologist, and an embryologist, 

 but since then he has become better known as an anthropologist. It was his hap to land in a 



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