310 Saunders. On the mode of Inheritance of certain Characters etc. 
be white. AZ the other 34 families included plants with cream 
plastids. 
We therefore have proof that none of the sulphur-white pollen 
here tested was carrying whiteness. Yet the sulphur-white plants 
which furnished this pollen are the same individuals from which 3 
p. c. of double whites were obtained on self-fertilisation. But if 
GOLDSCHMIDT’s view were correct might we not reasonably expect to 
find in the above experiments some evidence of the existence of this 
6 p.c. of pollen grains carrying W, whereas we find none. It appears 
in fact that on GOLDSCHMIDT’s view the whole behaviour of the 
sulphur-whites remains unexplained. His scheme fails to account 
for the excess of creams, and it involves the production of pure- 
breeding whites which have never been observed. 
Seeing then that reither in the case of doubleness nor in the 
case of plastid colour does the view that in certain somatic characters 
in Stocks we are merely dealing with a case of ordinary sex-limited 
inheritance meet the facts, I hold it impossible to accept GOLDSCHMIDT’S 
interpretation of the mode of inheritance of these characters. 
