SOLANUM COMMERSONTI. 387 
Now if this all is so, as it is stated by M. Labergerie—and I for one 
have no reason to doubt of his correctness—we have in Solanwm Commer- 
sonit a plant which, in the words of De Vries, “ has just arrived at a state 
of mutation,” and this has very probably been brought about by the better 
cultivation which it has received at the hands of M. Labergerie. 
Postscript.—Berlin, November 18, 1906.—After the close of the 
Congress and the visit to Cambridge, I saw the potato trials of Messrs. 
Sutton at Reading, and I could find no difference between Solanwm 
Commersonii violette and S. tuberosum ‘Blue Giant.’ Later in the 
autumn I found in my own trials that the tubers of the violet S. Commer- 
sonii had, in the raw state, a slight taste of hazelnut, as M. Labergerie 
had already stated ; the flesh also was purer white than in ‘ Blue Giant,’ 
where it was more of a cream colour. But now, two months later, these 
slight differences are not so perceptible. They are, on the whole, trifling. 
The whole matter, therefore, does not yet seem to be settled. The 
wild type is still a little bitter. The starch granules of all three present 
no exact differences. 
