A. B. Emmons 
47 
head than the average, as found in civilized countries and peoples, in order for 
labour to be short and easy. About one in ten would require a small and 
perhaps malleable head to make successful labour possible. Observations on 
the heads of new-born pure-blooded Indian infants as to size and malleability 
would be a welcome supplement to our present knowledge of pelvic efficiency. 
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(1) Hrdlicka, A. U.S. National Museum, personal communication. 
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(11) Michaelis. Das enge Becken. Leipzig, 1851. 
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