1911 J Proceedings. 13 



ferenoe to be preferred. In conclusion Mr. Senn stated that the park 

 board had established a tree nursery of 33,000 plants, from which 

 trees would be later supplied for the streets. 



Drs. Dorner, Barth, Graenicher, and Mr. Senn discussed the 

 lecture. 



Mr. Rowland Russel read a paper on Mutations, relating Mac- 

 Dougall's experiments on Oenothera, and stating that the matter 

 seemed more theoretical than practical. v 



Messrs. Ward, Kussel and Colles discussed the distinctions between 

 variants and mutants. 



Mr. Ward cited a new mammal record for Wisconsin : the Alle- 

 ghany weasel (Putorius rixosns alleghaniensis), specimens of which 

 been secured from three different localities, Burlington, Prairie du 

 Sac, and Prescott, Wis. 



Upon motion the meeting then adjourned. 



