BY THE SAME AUTHOR.

LESSONS IN ELEMENTARY PHYSIOLOGY. With Numerous Illustrations. New Edition. Foolscap 8vo. 4s. 6d.

SPECTATOR—"A very useful little manual which should be received with acclamation."

MEDICAL PRESS—"It is an admirable illustration of how the greatest masters of a science may teach its elements in the most simple manner."

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PHYSIOGRAPHY. An Introduction to the Study of Nature. 13th Edition. Crown 8vo. 6s.

SATURDAY REVIEW—"Written in that attractive style which is characteristic of a great natural history demonstrator, a style in which clearness and precision of language are combined with a vivid survey of the various objects touched upon."

ACADEMY—"It would hardly be possible to place a more useful or suggestive book in the hands of learners and teachers, or one that is better calculated to make physiography a favourite subject in the science schools."

AMERICAN ADDRESSES. With a Lecture on the Study of Biology. 8vo. 6s. 6d.

BRITISH QUARTERLY REVIEW—"This interesting and instructive volume has all the clearness and the earnestness of honest conviction that characterise the writings of its eminent author."

SCOTSMAN—"These lectures are models of calm and dispassionate treatment of the subject regarded as a question of history, and contain the clearest exposition, as well as the best justification that has yet appeared of the doctrine of evolution."

SCIENCE PRIMER. Introductory. 18mo. cloth. 1s.

GUARDIAN—"It is distinguished by the perfect lucidity and excellent literary style of which he is so great a master. The elementary conception of nature and science of material and immaterial objects, of mineral and living bodies are explained in the fewest and clearest words."

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