‘638 Variation of the Human Shoulder-Blade. [July 
4 
To these I can add the indices of thirteen shoulder-blades of the | 
gorilla, eight of the chimpanzee, and two of the orang." 
Ba ¥ 
Broca. Flower and Garson. Dwight. 
Scap.Ind.  _TnEspin. | Soap, tnd. —MSBIA-| Soap, ind, ag 
Gorilla. sisest: | 70.38 126.05 | 72.2 132.5 | 70.1 130.7 & 
Chimpanzee... | 68.52 130.23 69.9 133.8 68.4 129.1 _ 
Orang. sesso 69.27 97-461 77.6 103.8 73.6 89.7 
Gibbon ......... 96.97 198.56 96.5 201.2 
_ Below are the highest and lowest indices that I found in gorilla — 
and chimpanzee: | 
AD ES epee PR rt hye eT ae ilar ee SSS aiin SRN 
Scapular Index. Infra-spinous Index. 
í Highest........ 76. 
Gorilla asss 
a f Lowest. s.s... 66.1 116.0 
5 $ Highest........ 72.8 136.0 
. Chiimpaszes.. f Lowest......... 66.1 117.5 
These figures show that the highest scapular index of the — 
gorilla and chimpanzee is sometimes, though very rarely, sur- _ 
passed in human bones. I say nothing of the orang, having 
measured the bones of only one adult skeleton. The case is 
different, however, with the infra-spinous index, as the lowest ¢ 
the gorilla and chimpanzee exceeds the highest human one. 
DESCRIPTION OF PLATES. 
The views of the dorsum of the scapula are all on the same scale. Figures 12 
and 13 are not on precisely the same scale as the others. a 6 and 13 are from 
the same hone, All but 5 and 11 are presumably Caucas 
Scapular Index. Infra-spinous Index. 
Fig. 4. $5.1 ‘ 72.8 
sy 4 From Kentucky mounds......... 82.2 107.3 ra 
a 7-8 91.4 
c is 67. 8 x 90.6 : 
“ 8.4: is 69. 4 2 3 
F opposit fi iS ceteisnenek 97 
E a} a penae { 61.5 91.4 
=. 40. A ha long bone 56.5 i 76.3 me 
“ on 58.3 res o o o 
à Sm extreme degrees of inclination of the acromion. a : 
1 In spite of a foot-note on p. 75 of Broca’s paper, I confess to some doubt as to” . 
whether his figures of ape measurements refer to the number of skeletons or to be 
the number of scapulæ. I have followed Flower and Garson, who r ce his 
table, in stating it as I have in the text. My own figures, like theirs, refer to ind 
> vidual bones. i 2 
