Chap. IV. 
MANNER OF DEVELOPMENT. 
119 
in the skulls of the American aborigines, and connects 
this fact with their remarkably acute power of sine . 
The Mongolians of the plains of Northern Asia, according 
to Pallas, have wonderfully perfect senses ; and I richard 
believes that the great breadth of their skulls across 
the zygomas follows from their highly-developed sense- 
The Quechua Indians inhabit the lofty plateaux of 
Peru, and Alcide d’Orbigny states- that from con- 
tinually breathing a highly rarefied atmosphere they 
have acquired chests and lungs of extraordinary dimen- 
sions. The cells, also, of the lungs are larger and more 
numerous than ,in Europeans. These observations 
have been doubted; but Mr. D. Forbes _ carefully 
measured many Avmaras, an allied race, t'mg a 
height of between ten and fifteen thousand feet ; am 
he informs me 32 that they differ conspicuously from the 
men of ah other races seen by him, m the circum- 
ference and length of their bodies. In his table of 
measurements, the stature of each man is taken at 
1000, and tie other measurements are reduced to this 
standard. It is here seen that the extended arms 
of the Avmaras are shorter than those of Europeans, 
and much shorter than those ot Negroes. 0 egs aie 
likewise shorter, and they present this remarkable i pecu- 
liarity, that in every Aymara measured the lemur is 
actually shorter Am the tibia. Oh ah average the 
length Ot the femur to that el the tibia is a» - to 
252; whilst in two Europeans measured at xhe same 
3 ° Prichard, • Pkys. Hist, of Mankind,’ on the authority of Blurncn- 
bach, vol. i. 1851, p. 311 ; for the statement by I alias, vol. tv. 184 , p. 
407. 
3I ' Quoted by Prichard, 1 Researches into the Pliys. Hist, of Man- 
^MthForw' "valuable paper is now published in the ‘Journal of 
the Ethnological Soc. of London,’ new senes, vol. n. 1870, p. 193. 
