BOOK NOTICES 61 



cerned in the production of a monograph of this nature. As an 

 authority it is pre-eminent ; while for beauty of illustration it has 

 never been surpassed. 



The work forms four handsome demy 410 volumes, contains 

 one hundred hand-coloured plates, and numerous illustrations in the 

 text. 



A TREATISE ON ZOOLOGY. Edited by E. Ray Lankester, M.A., 

 LL.D., F.R.S. Part II. The Porifera and Coelentera. By E. A. 

 Minchin, M.A., C. Herbert Fowler, B.A., Ph.D., and Gilbert C. 

 Bourne, M.A. With an Introduction by E. Ray Lankester. 

 (London : A. & C. Black, 1900.) 



In the "Annals " for July last (p. 191) we announced the advent 

 of this standard work on Zoology, and noticed the first part issued. 

 Part II., dealing with the Porifera and Coelentera, has since appeared, 

 showing that the treatise is making rapid progress. The volume 

 under notice opens with a chapter on the Enteroccela and the 

 Coelomoccela by Professor Ray Lankester. This is followed by 

 chapters on Sponges (with index, pp. 178), by Mr. Minchin; on the 

 Hydromedusse and Scyphomedusas (pp. Si), by Dr. Fowler; on the 

 Anthozoa (pp. 84), by Mr. Bourne ; and on the Ctenophora (pp. 25), 

 also by the last-named authority. A useful feature of the work is 

 that a separate index is furnished to each of the groups treated of, 

 and a bibliography of works upon them is also given. The high 

 standard and scientific character of the work, previously alluded to 

 by us, is fully maintained by Part II., and the illustrations are 

 numerous and excellent. The volume is quite indispensable to 

 those engaged upon or interested in the scientific study of the 

 Porifera and Coelentera. 



TEXT-BOOK OF ZOOLOGY TREATED FROM A BIOLOGICAL STAND- 

 POINT. By Dr. Otto Schmeil. Translated from the German by 

 Rudolph Rosenstock, M.A., and edited by J. T. Cunningham, 

 M.A. With numerous illustrations. (London : A. &. C. Black.) 



The object of this work is to furnish a text-book of zoology 

 which treats of the subject in such a fashion as to enlist the interest 

 of the taught. Such an aim must assuredly commend itself to all 

 who are interested in natural history and its teaching in schools 

 and other educational' institutions. It is claimed for this work that 

 it proceeds by interesting and intelligible steps from simple facts to 

 important conclusions ; that structure is always considered in relation 

 to function ; that animals are treated of as living beings ; and that 

 a sound knowledge is afforded of structure, classification, physiology, 

 habits of life, distribution, and environment. The groups of animals 

 falling within the scope of this work are mammals, birds, reptiles, 

 fishes, and insects ; and each family or order is considered in a 

 scientific yet popular manner. The book marks a departure 



