1288 
Through accurate determination Wreer') found 1886 grams for the 
brain weight of a fullgrown female specimen of Tursiops tursio, a 
toothed whale of the Delphinidae family, the body weight being 
432 times as much. From this the cephalisation-coefficient 0,981 
can be calculated. The Odontocetes, among them especially the 
Delphinidae, swim with extraordinary dexterity and swiftness, faster 
than the fastest steamer, they even swim round a steamer at full 
speed; the Mysticetes, on the contrary, cannot reach the speed of 
an ordinary steamer. In connection with this the dorsal muscles of 
the former are much more powerful, which is to be seen by the 
great thickness of the back part of the body. 
Thus the muscle apparatus of Homo neandertalensis was also 
stronger than that of Homo sapiens, and among the races of modern 
Man the Mongoloids possess the most powerful muscle apparatus. 
In agreement with this Homo neandertalensis and the Mongoloids 
possess also the relatively largest encephalon. 
4) loc. cit, p. 113. The body weight with the brainratio 1: 432 is 815kg. The 
value 278 is given, evidently a misprint. 
