158 Explanation of Particulate Inheritance 
small part of it, and so much the more since the effects 
produced by this particular group of germinal anlagen 
must combine with those produced by all the others both 
antecedent and subsequent. 
It would amount to the same thing if this given group 
of specific anlagen differed from the corresponding group 
of the other germinal substance not only quantitatively 
but also qualitatively to a certain extent. 
We believe the final result to be that we can affirm 
that the hypothesis of a heterogeneous germinal sub- 
stance whose anlagen do not all enter into action from the 
first moment of development, but rather become active 
successively one by one, throughout the entire course of 
development, explains the phenomena for which pre- 
formistic germs were especially devised quite as satis- 
factorily as they do, and at the same time is not open to 
any of the formidable objections, which demonstate with 
certainty the untenability of the hypothesis of pre- 
formistic germs, 
