= ec 
4 
PEL ek ET NE à. I D. 
BE TE a a oer EA 
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= 


INTRODUCTION. MOSS 
to approach more closely to those regions which are physiologically 
_ and embryologically individualized.” | 
JOHANNSEN, too, seems to study the heredity of the indices; for 
_ he writes (1907, S. 188): ”Und wenn ich nach Kreuzung einiger meiner 
_ Bohnenrassen komplizierte mendelsche Erscheinungen in Bezug auf 
Dimensionen und Indices finde, so besitzt offenbar auch die Anthropol- 
…  ogie ein dem entsprechendes Material aus Schädelmessungen”. That 
“ the headform is not a single factor in Mendelian sense, is also said by 
JOHANNSEN in his handbook (1913, p. 686) where he speaks of an 
""Unmenge” of genotypical differences. | 
In this first investigation we occupy ourselves with the heredity 
in general of the head-index (see also 1920 c) in our material 4) (1920b 
table» A-E.). 


< 
1) About 3600 observations in 360 families. 
