TO RELATIVE CAPACITY OP RACES. 221 



are, they exceed the Peruvian ones. Keeping in view the varied 

 sources of the latter, Professor Wyman remarks: "Although the 

 crania from the several localities show some differences as regards 

 capacity, yeb in most other respects they are alike." And the 

 numbers, when viewed separately, are too few to attach much 

 importance to variations within so narrow a range. Nevertheless 

 it is noteworthy that the highest mean is that of the Aymaras 

 of Lake Titicaca; and this difference is considerably increased by 

 measurements derived from subsequent additions to the Harvard 

 collection, received since the death of Professor Wyman from the 

 high valley of Lake Titicaca. In other respects besides their marked 

 superiority in size, the latter crania differ from those of the Coast 

 tribes, and confirm the earlier deduction of an ethnical distinction 

 berween the more numerous race so abundantly represented in the 

 coast cemeteries, and that which is chiefly represented by crania 

 brought from the interior. The numbers from the several localities 

 selected by Professor Wyman as fair average specimens of the whole 

 stand thus: six from burial towers, or chulpas, near Lake Titicaca, 

 1292; five from Cajamaquilla, 12 68 "7 5; fourteen from Casma, 1254; 

 four from Truxillo, 1236 ; four from Pachicamac, 1195; sixteen from 

 Amacavilca, 1176-2; and seven from Grand Chimu, 1094*28. 



In 1872, the collection of Peruvian crania in the Peabody Museum 

 was augmented by a large addition from 330 skulls obtained by 

 Professor Agassiz, through the intervention of Mr. T. J. Hutchinson, 

 British Consul at Callao, in Peru. From those contributed to the 

 Harvard Museum, Dr. Wyman selected eleven as apparently the 

 only ones unaffected by any artificial compression or distortion, and 

 therefore valuable as illustrations of the normal shape of the Peru- 

 vian head. They are quite symmetrical. The occiput, instead of 

 being flattened or vertical, as in the distorted crania, has the ordi- 

 nary curves, and in some of them is prominent. Two of them are 

 marked by a low, retreating forehead; but in all the others the 

 forehead is moderately developed. As, moreover, the larger half 

 appear to be the skulls of females, this accounts for the mean capa- 

 city falling below the Peruvian average. But they are all small. 

 The largest of them is only 1260 cub. cent., or less than 74 cub. in.; 

 and the average capacity of ten of them is 1129 cub. cent., or 69 

 cub. in. 



The collection, as a whole, differs from that of Mr. Squier, in having 



