John Peter Hamilton Boileau, Popular Science Monthly (1883)
“ It is well known that the average weight of the adult male brain is under 50 ounces. The specific gravity of the brain I examined was 1·049, and this is as high as any recorded. From Professor Aitken's work I find that the average specific gravity of the brain is 1·036, and the highest specific gravity of the densest part of a brain ever taken by Professor Aitken, or any one else, I believe, is 1·049. ”
