l893-] REPORT OF BOTANICAL SECTION. 177 



March 25, 1892. Microscopical studies. 



Mr. Dumond exhibited Bacillus subtillus of twenty-four hours* 

 growth. The bacteria were obtained from a boiled infusion of hay, 

 planted on the inner surface of a cooked potato. Mr. Dumond 

 stated that he had found them highly motile, but when exhibited to 

 the class no motion was seen. Mr. Dumond also showed specimens 

 of Oscillaria. In addition to the common forms, were some in the 

 form of a spiral coil, narrowing from the base to the top, like a cone. 



April 8, 1892. The subject of study was the red and the white 

 Maples. 



Mr. Fuller stated that he had found Acer rubruin with yellowish 

 petals. 



Mr. Fuller showed a specimen of Ulmus racemosa. Blossoms of 

 Sanguinaria Canadensis, and Hepatica were shown. 



April 22, 1892. Among the numerous Spring blossoms shown, 

 were typical specimens of Hepatica triloba and H. acutiloba, showing the 

 difference in the species in a marked degree. 



Mr. Laney exhibited a number of willows, a large and interesting 

 collection of branches of California shrubs, and a large cone of 

 Finns ponderosa. 



Miss Beckwith exhibited a collection of plants from Tennessee 

 among which were Rhododendron midiflorum, and R. viscosum, Hous- 

 tonia ccerulia, Anemonella thalictfoides, Corniis Florida, ^sci/lus glabra, 

 and yE. flava, Cercis Canadensis, Hepatica triloba, and berries of Smilax 

 bona-nox. These were especially interesting as showing the earlier 

 blossoming in that latitude. 



May 6, 1892. Mr. Fuller reported finding Fatiunculus fascicularis 

 April 27. 



Mr. Laney reported that Mr. H. B. Brown had found one specimen 

 of Daphne Mezereum in Seneca Park. Also, that Amelanchier Canadensis 

 was now in blossom. 



May 20, 1892. Mr. Fuller exhibited specimens of Laniium 

 maculatum, (cultivated) and L. amplexicaule, (native) comparing and 

 noting the existing differences. Among the very large number of 

 plants examined were, Chrysospleniuni Americanum, and Lycopodium 

 lucidulum. 



June 3, 1892. Mr. Fuller exhibited specimens of leaves of 

 Maple, showing the differences between the red and the white varieties. 



12, Proc. Roch. Acad, of Sc , Vol. 2, April, 1893. 



