An Elementary Course of Practical Zoology. By the late T.
Jeffery Parker, D.Sc., F.R.S., and W. N. Parker, Ph.D. With 156 Dlustrations. (Macmillan and Co. 103. 6d.)—The late Dr. Jeffery Parker and his brother had begun to arrange their materials for the present work when it was in- terrupted by the death of the former, after he had drafted out a work on the frog, intended to be used in a proposed "Biology for Beginners," and afterward; for the "Course of Practical Zoology." Dr. W. N. Parker has therefore divided the present work into two parts, the first consisting mainly of .Teffery Parker's above-mentioned work on the frog, with but little alteration ; and the second being devoted to representa- tives of the principal phyla of the animal kingdom, illustrated by typical examples, such as Amceba, Bacteria, Vorticella, Hydra, the earthworm, the crayfish, the freili-watei mussel, Ansphioxes, the dogfish, the rabbit, &c. The work contains a large amount of information, which will be of great use both in the classreora and to private students; and the names of the authors are a sufficient guarantee for the care and accuracy with which it has_ been compiled. •