Although Parasitology, broadly interpreted, includes the study of parasitic bacteria within its sphere, bacteriology is excluded from consideration here because it is assumed that a knowledge thereof is sufficiently recognised as essential by those who deal with medical education. At any rate bacteriology is more or less adequately taught to medical students and candidates for the Diploma in Public Health, although it receives insufficient consideration in courses leading to the Diploma in Tropical Medicine and Hygiene. On the other hand, parasitology is taught to candidates for the latter diploma to the limited extent that is allowed in the too short courses of instruction that are at present given for the diploma. Medical students in general learn next to nothing of parasitology beyond what they pick up in the course of their preliminary zoological training. I base these statements on personal experience, extending over many years, as teacher and examiner. Similar conclusions to these have been reached by others who are able to form an objective opinion.