754 PRIMATES 
by anthropologists, or that it is likely to be final. Whatever care 
be bestowed upon the arrangement of already acquired details, or 
whatever judgment be shown in their due subordination one to 
another, the acquisition of new knowledge may at any time call for 
a complete or partial rearrangement of the system. The difficulties 
which encompass the subject have, indeed, been already indicated, 
and will be found abundantly illustrated in the writings of those 
authors who have specially devoted themselves to its elucidation. 
Bibliography.—P. Topinard, Eléments @’ Anthropologie Générale, 1885; A. de 
Quatrefages, Histoire Générale des Races Humaines (1. Questions Générales, 1887 ; 
2. Classification des Races Humaines, 1889); Quatrefages and Hamy, Crania 
Ethnica (1873-1879) ; D. G. Brinton, Races and Peoples, 1890. 
