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and if taken in conjunction with good practical classes in Biology, we believe 

 it will serve its purpose admirably. The illustrations are clear and well 

 chosen. 



J. Bronte Gatenby. 



Essentials of Zoology. By Alexander Meek, Professor of Zoology, Univer- 

 sity of Durham. [Pp. vi + 325, with 145 illustrations.] (London : 

 Longmans, Green & Co., 1922. Price los. 6^.) j \ 



Like Woodruff's book, and the less recent ones of Graham Kerr and 

 O'Donoghue, Meek's Essentials is an introductory course for students of 

 Medicine, Agriculture, or General Science. The figures throughout do not 

 appear to us to have been very well drawn or reproduced ; all the usual 

 types are taken and treated thoroughly, and the book is in every way suitable 

 as an introduction to Morphology and Embryology, for the medical and 

 general biological student. Since, however, there is no treatment in the 

 history of the science, of Heredity, Sex, and Evolution, the book cannot be 

 considered quite complete. We think that the treatment of some of the 

 chapters is novel and attractive ; something of the modern physiological 

 outlook has been introduced here and there. A new edition should contain 

 the sections mentioned above ; at present it does not fulfil the recommenda- 

 tions of the General Medical Council. Some of the scratchy illustrations 

 should be done again. 



J. Bronte Gatenby. 



Catalogue oJ Cretaceous Bryozoa. Vol. IV. By W. D. Lang, Sc.D., F.G.S. 

 [Pp. xii + 404.] (British Museum (Natural History), 1922. Price 

 32s, 6i.)j 



This systematic treatise by Dr. Lang is the fourth of a series on the Cretaceous 

 Bryozoa, and is a direct continuation of vol. iii, completing the catalogue of 

 the Cretaceous Cribrimorph Cheilostomata. 



The first two volumes were compiled by Dr. Gregory, and included the 

 Cyclostomatous and Trepostomatous Bryozoa. This volume deals solely 

 with the large family Pelmatoporidae — Turonian to Danian, Cribrimorphs in 

 which two rows of pelmata or pelmatidia form markings on the intraterminal 

 front wall. Though the work is essentially systematic in character, it is 

 superior to many catalogues in combining fact and theory, and is not merely 

 a collection of observed facts. As in the third volume the classification is 

 based on palaeontological principles which have only recently become evident, 

 and the evolution of each character from its primitive condition is fully 

 discussed. 



A, E. Clark. 



Handbuch der biologischen Arbeitsmethoden. Abt. ix, Methoden zur 

 Erforschung der Leistung der tierschen Organismus, Teil i. Heft 2. 

 By Hans Przibram and others. [Pp. 98-438.] (Berlin : Urban 

 & Schwarzenberg, 1922. Price 2,160 mks.) 



This is the ninth part of a series of technical works dealing with Zoology, 

 Physiology, Pathology, etc. The present volume deals with the handling, 

 dissection, drawing, macro- and micro-injection, clearing and preservation 

 of animals. Reconstruction methods, and the putting up of museum 

 specimens, are dealt with. Microscopical technique is not specially reviewed. 

 There are some peculiar sections, e.g., " Method for the Finding of the 

 Food Plants of Insects," " Methods for the Making of Text-figures by the 



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