[Book Reviews]

Abstract

THIS publication deals with a branch of osteology which up to the present time possesses no special literature of its own, and is an attempt to trace the changes which take place in the skulls of ruminants from the time of birth up to adult age. The skulls of Bos, Capra, and Portax are studied in a most exhaustive manner at different ages, and comparisons drawn; elaborate measurements being given in every case. Special attention is paid to the effects produced by the development, final size, and position of the sinuses, teeth, and horns; also, the differences between the skull at birth and at adult age are considered in relation to rate of growth of the animal, and its length of life. In the last chapter the three types, Bos, Capra, and Portax, are contrasted with each other, and a number of other forms described, their relations to these types being indicated.

Zur Kenntniss der Postembryonalen Schädelmetamorphosen bei Wiederkauern.

By H. G. Stehlin. (Basel: Benno Schwabe, 1893).