On a New Group of Bactericidal Substances Obtained from Hexamethylenetetramine.

1 6. The interpretation of the growth of these plants by Mendelian factors is further strongly supported by the distribution of the standard deviations of the plants with different relative sizes. Thus it has been shown that the extreme plants which would be more nearly homozygous and for this reason less variable are, as a matter of fact, some 50 per cent less variable than the plants in the middle class after all allowance has been made for the difference in the size of the means. This is a preliminary abstract of a paper with the same title now in press in the Zeitschrift fur induktive Abstammungsund Vererbungslehre.