ABSTRACT
This chapter presents informative results obtained from such "fossil brains." Direct information concerning the size and certain characteristics of primate brains from the may be obtained from natural or artificial endocranial casts of fossil skulls. The progression indices of the non-neocortical structures have been arranged in scales. Such scales provide information about the comparative size of these structures in individual species and in other systematic groups. Comparative neuroanatomical results must interpreted with considerable caution, especially when employed to elucidate questions on the way sizes of the structures have been achieved in species. Investigations of encephalization in Insectivores and Primates based on extensive material from own collection and from literature were published mostly in collaboration with Bauchot. Comparisons of brain weights considered in conjunction with the differences in body weight by aid of the allometry method give information about "encephalization." Investigations on the volumes of various brain parts are very time consuming, since they are performed on serial sections of whole brains.
