In one particular the BNA nomenclature is not entirely consistent. While recommending or at least permitting the use of the general terms _dorsal_ and _ventral_ in place of the human _posterior_ and _anterior_, and _cranial_ and _caudal_ in place of _superior_ and _inferior_, it retains the words _anterior_, _posterior_, _superior_, and _inferior_ as parts of the names of definite organs. For example, we have the muscle _serratus anterior_ in place of _serratus ventralis_; _serratus posterior inferior_ in place of _serratus dorsalis caudalis_. This is very unfortunate, from a comparative standpoint, but we have felt it necessary to retain the BNA terms in order that the structures of the cat may receive the same names as the corresponding structures of man. In the matter of orthography we have endeavored to follow the best English anatomical usage, as exemplified in Gray’s _Human Anatomy_,--therefore writing _peroneus_ in place of _peronæus_, _pyriformis_ in place of _piriformis_, etc. The book is designed for use in the laboratory, to accompany the dissection and study of the structures themselves. Anatomy cannot be learned from a book alone, and no one should attempt to use the present work without at the same time carefully dissecting the cat. On the other hand, anatomy can scarcely be learned without descriptions and figures of the structures laid bare in dissection, so that this or some similar work should be in the hands of any one attempting to gain a knowledge of anatomy through the dissection of the cat. The figures have all been drawn from actual dissections, and have been carefully selected with a view to furnishing the most direct assistance to the dissector. It is hoped that no figures are lacking that are required for giving the students the necessary points of departure for an intelligent dissection of any part of the body. The fore limb is illustrated somewhat more fully than the hind limb, because it was thought that the fore limb would usually be dissected first; the hind limb will be easily dissected, with the aid of the figures given, after the experience gained in dissecting the fore limb. As the book is designed to accompany the dissection of the specimen in the laboratory, it was deemed best to give succinct specific directions for the dissection of the different systems of organs, together with suggestions as to methods of preserving and handling the material. These are included in an appendix. CONTENTS. PAGE THE SKELETON OF THE CAT 1