The descriptive matter of this book is written from the point of view of the older textbooks and is based on the data they contain. Most of the illustrations are the well known semidiagrammatic figures of Stöhr, to which a few original photomicrographs and some illustrations from recent textbooks have been added. The work is prefaced with a simple description of the compound microscope and directions for its use. The text is interlarded with detailed directions for the study and drawing of the prepared sections furnished. The author does not regard the study of fresh tissue as practicable for beginners. There is an appended list of titles for the student who may have been inspired to seek further information.