128 
THE VOYAGE OF H.M.S. CHALLENGER. 
slight modification of Broca's metliod," I find that he gives 1*452 c.c. for the mean of 
the males, and 1"245 c.c. for the mean of the females. The mean of these two measure- 
ments is therefore 1348, which is below the upper term of the microcephalic series, 1350, 
as usually defined by craniologists, so that they are in the microcephalic and not in 
the mesocephalic group. Moreover, Garson has excluded from his average a skull 
the capacity of which was only 1-210 c.c, and, if that had been included with the rest, 
his Fuegian crania would have been more decidedly microcephalic. The study of these 
additional specimens leaves the description of the skull of the Fuegians in much the same 
position as it had been placed in by my observations, published in the First Part of this 
Report. 
