This work has long been one of the most complete in our language devoted to the subject of Comparative Anatomy. At the same time such has been the great advance of anatomical and physiological science, especially under the influence of microscopical observations, that a book never so complete in 1841 could hardly be regarded as a guide in 1855. It was, therefore, with pleasure that we saw announced a second edition, as in its plan and general arrangement we know of no other book so well adapted for the purposes of the general student. A glance at the present edition indicates that the author has added a considerable quantity of new matter. The plates, which were excellent in the first edition, have been increased from 330 to 398, and this even does not indicate the number of new plates, as many of the old ones have been withdrawn. The new...

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