210 THE HISTORY OF CREATION. 
the female sex is alone distinguished are, for example, the 
developed breasts, with the lactatory glands of female mam- 
mals and the pouch of the female opossum. The bodily 
size, also, and complexion, differs in female animals of many 
species from that of the male. All these secondary sexual 
qualities, like the sexual organs themselves, are transmitted 
by the male organism only to the male, not to the female, 
and vice versd. Contrary facts are rare exceptions to the 
rule. 
A fourth law of transmission, which has here to be men- 
mentioned, in a certain sense contradicts the last, and limits 
it, viz. the law of mixed or mutual (amphigonous) trans- 
mission. This law tells us that every organic individual 
produced in a sexual way receives qualities from both 
parents, from the father as well as from the mother. This 
fact, that personal qualities of each of the two sexes are 
transmitted to both male and female descendants, is very 
important. Goethe mentions it of himself, in the beautiful 
lines— 
“ Von Vater hab ich die Statur, des Lebens ernstes Fiihren 
Von Miitterchen die Frohnatur und Lust zu fabuliren.”’ 
‘* From my father I have my stature and the serious tenour of my life, 
From my mother a joyous nature and a turn for poetizing.” 
This phenomenon, I suppose, is so well-known to all, 
that I need not here enter upon it. It is according to the 
different portions of their character which father and 
mother transmit to their children, that the individual 
differences among brothers and sisters are chiefly determined. 
The very important and interesting phenomenon of hy- 
bridism also belongs to this law of mixed or amphigonous 
