Handbuch der mikroskopischen Anatomie des Menschen.

This volume includes topics that enter into almost every histologic study and covers fields in which great progress has been made in recent years. The chapter on the blood vessels and heart is by Benninghoff, that on the lymphatic vessels and tissues by Hellman, and that on the spleen by Hartmann. All three authors are active workers in their respective fields, have a physiologic point of view and present a mass of well organized material including numerous new observations, particularly on human material. The detailed and critical reviews of the literature are exhaustive, at least so far as the German literature is concerned. The evaluation of the cytologic criteria for differentiating types of cells is occasionally open to question, but in most such cases further experimental work will be necessary to establish cell relationships. The great variability in the structure and functions of the spleen in different vertebrates has been