The wikipedia article on Oxford anthropologist Arthur Thomson
(1858-1935) notes that he's best remembered for formulating Thomson's Nose Rule, which states that ethnic groups from cold climates tend to have thinner noses than groups from hot climates.
Apparently he's not remembered for his "Women Are Like Apes" theory, which he presented to a meeting of the Royal Academy of Sciences in 1927. The basis of this theory was that, "woman's legs are usually shorter, and her arms longer, than man's" — and this, Thomson felt, made women more ape-like.
I was curious whether Thomson was actually correct about female body proportions, and after some googling I've concluded that he probably was — at least about women (on average) having shorter legs as a proportion of their total height than men do. See, for instance, this article
by a designer of bicycles for women.
Harrisburg Telegraph - Oct 5, 1927