I Proceedings. 11 



April 5, 1892. 



Twelve persons present. 



The papers read were: v ' 



Notes on the Alpine characteristics of the flora of the 

 Coteau des Prairies, by E. P. Sheldon. [See paper C] 



Some poisonous plants around Winona, Minnesota, 

 with descriptions of their characters, by C. W. McCurdy, 

 read by Professor Conway MacMillan. 



[abstract.] 

 Attention is called to the poisonous properties of the following plants 

 which are either native or introduced in the neighborhood of Winona, 

 Minn.: Aetata spicata Linn., Aconitum napellus Linn., Ranunculus scel- 

 eratus Linn., Hellborus niger Linn., Rhus toxicodendron Linn., Rhus 

 venenota D. C, Solanum nigrum L,mn.,Atropa belladonna Linn., Solanum 

 dulcamara Linn., Hyoscyamus niger Linn., Datura stramonium Linn., 

 Pastinaea sativa Linn., Conium maculatum Linn., Cicuta maculata Linn., 

 Archemora rigida D. C, Aethusa cynapium Linn., Taxus baccata Linn., 

 Kalmia augustifolia Linn., Symplocarpus fortidus Ntitt., Arisaema tri- 

 phyllum Torr., Digitalis purpurea Linn., Lobelia inBata Linn., Phytolacca 

 decandra hmn., Urtica gracilis Ait., Andromedo mariana JAnn. The fre- 

 quent occurrence of poisonous Agarics is also noted and it is recorded 

 that the flesh of edible toadstools does not become discolored w^hen brok- 

 en, while that of the poisonous species quickly changes to a deep blue or 

 purple color. 



O. A. Stoneman was elected a member of the Academy. 

 May 3, 1892. 



Eighteen persons present. 



The papers presented were the following: 



Motion and life by Professor L. W. Chancy. 



Remarks on some recent investigations on Phagocytes; 

 and the relation of Protozoa to disease, by Professor Henry 

 F. Nachtrieb. 



[aBvSTRACT.] 



Metchnikoff's recent valuable contributions to our know^ledge of pha- 

 gocytes were briefly reviewed and their importance pointed out. 



The last edition of Pfeifler's "Die Protozoen als Krankheiterreger" was 

 briefly re view^ed and compared to some of the earlier works on Bacteriology 

 in that the subject was still in a rather chaotic condition and at the same 

 time was full of promise. The subject undoubtedly is one of great import- 

 ance. It is also one of great difiicult}^ possibly is surrounded by greater 

 difficulties than Bacteriology was in Jits^earlier days, since it is impossible 

 at present to cultivate any of the various protozoa that are cell parasites 



