PROF. MONNIG, who is professor of parasitology in the Veterinary Faculty of the University of Pretoria, is well-qualified to write a work of this character. The aim of his book is to give an account of the helminth and arthropod parasites of domestic animals and, at the same time, to stress those practical aspects of the subject most useful to the veterinarian. The morphology of the parasites concerned is dealt with in a general way and sufficient account is given about their general characteristics to enable specific parasites to be identified. The parasitic diseases themselves and their treatment come in for rather fuller consideration. The chief parasites of the common domestic animals of the world, and also kindred creatures affecting fur-bearing mammals, are included. If important parasites have been omitted it is only because, the author states, discrimination on this subject is difficult on the basis of existing knowledge.