"This little book differs from all others that treat of the blood in so far as it deals only with what is absolutely essential and of first importance in clinical methods of blood examination. Of the three cardinal lines of blood investigation (viz., staining, counting of cells and hemoglobin estimation) only those methods have been described which have been definitely proved of value. Coupled with the description of methods, the respective features of normal blood have been briefly discussed; while, in addition the most important facts in the semiology, necessary for a proper understanding of pathologic conditions, have been dealt with."
Owing to the recognized position of Pappenheim in the field of hematology, it is interesting to note that he recommends the combination of the May-Grünwald stain with the Giemsa stain as the most serviceable panoptic blood stain at our disposal. For hemoglobin determinations he recommends Sahli's hemoglobinometer as the