Fig. 2From: Bergmann’s rule is a “just-so” story of human body sizeChanges in body proportions in fetal life (top illustration). B.H., body height/length; M.L., midline. Changes in body proportion during postnatal life (lower illustration). kh, head length as a percentage of total body length, 4 kh = 25%, 5 kh = 20%, etc.; ann., age in years; 0 ann., birth, etc. From Stratz [18], top illustration modified at http://www.neonatology.org/classics/hess1922/hess.3.htmlBack to article page