

INTRODUCTION. 
DENIKER (1900) mentions the names of some investigators, who have 
occupied themselves with the heredity of head form. They arealsomen- 
tioned by RIPLEY (1900, p. 119). It regards inquiries into the similar- 
ity between newborn children and their parents. TSCHEPOURKOWSKY 
too, made such an inquiry. 
Some observations on the heredity of head form have further been 
made by Nystrom (1902, S. 230). He concludes that there is no 
constant relation between the index of children and that of parents. 
In connection with the re discovery of the MENDELIAN rules only a 
single remark has been made by Hurst and by FISCHER (FRETS; 1917, 
p. 436). HAUSCHILD (1916, S. 36) tries to demonstrate the importance 
ofthe MENDELIAN rules for the knowledge of the index for a material of 
700 skulls of the West-German population. 
HAUSCHILD is of opinion, that we must admit a heredity factor for 
each of the dimensions of skull, so a factor L for the length, a factor B 
for the breadth and a factor H for the height. For the same ’’prepotence 
of heredity,’ of these factors B dominates over L and H, L over H 
(S. 37). H. considers which formulae for the cross-breeding of different 
races —- German races since the Emigration of Nations — may be 
founded on Mendelian base and how in later material the Mendelian 
heredity is to be recognized. 
As far as I understand this investigation, which characterizes itself 
by a deficient manner of expression and by superficial conclusions, it 
has little value as Mendelian work. HAUSCHILD is of opinion "dass, 
wenn dasselbe Mass von beiden (verschieden-rassigen) Eltern doppelt 
dominant (homozygously) vererbt wird, dieses Mafs bei der Kreuzungs. 
form grösser wird.” And ”es besteht immer die Tendenz das grössere 
— Mass auf die Kreuzungsform zu vererben, sodass die Kreuzungsform. 
voluminöser wird als jede der Elternformen. ” 1) 
CASTLE (1916) made an inquiry into the heredity of the length and 
1) A short time ago a small investigation on the heredity of headindex has been pubr 
_ lished by Bryn (1920). His results will be mentioned in the text 
