120 , ROCHESTER ACADEMY OF SCIENCE. [Jans re, 
The practical studies from Bessey’s Botany with the microscope, 
have been conducted as far as possible in accordance with the author’s 
plan, and have been eminently successful. 
In the studies of plant tissue, when growing specimens could not 
be obtained, prepared slides from Mr. Streeter’s extensive collection 
have been used. : 
Plants indigenous to this vicinity have been examined in their 
season, and their habits and variations noted. 
Extracts from the Minutes of the Section. 
January 24, 1890. Microscopical studies. | Parenchyma tissue of 
Castor-oil Bean. Bast tissue of Adutilon. Rind of Orange showing 
oil vessels. Bark of Cinnamon. Spore fruit of Chara fragils. 
Protococcus. 
February 21, 18g0. Microscopical studies. 
Mr. Walker showed pollen grains of Symplocarpus fatidus. 
Mr. Dumond showed a specimen of Vaucheria sessilis, with 
zoospores in process of formation. 
Mr. Dumond exhibited specimens of the Scotch Heather and 
Holly ; also Lichens and Mosses which he brought from Scotland. 
April 18, 1890. Miss Macauley exhibited a Sangutnarta Canaden- 
sis having pink blossoms, found at Fairport; also Décentra Canadensis 
and D. cucullaria which were found growing together in great 
abundance. 
Miss Beckwith showed Pel/ea atropurpurea from Wisconsin. 
The microscopical studies were spore-sacs of Peztza coccinea in 
various stages of development, also a number of Desmids. 
May 16, 1890. The plants examined were Smilacina stellata, 
Pedicularts Canadensis, Gerantum maculatum, Ranunculus repens, Viola 
cucullata, Anemonella thalictroides, Saxifraga Virgintensts, Sambucus 
pubens. Caltha palustris, Ribes floridum and Mitella diphvita. 
Mr. Dumond exhibited the spores of Zyuisetum arvense, showing 
the movements of the elators. 
May 30, 1890. The evening was chiefly devoted to an examina- 
tion of the phanerogams. 
The microscopical studies were, Profococcus shown in the motile 
stage, and the red form in the resting stage. 
June 13, 1890.  Lithospermum hirtum was shown by Miss 
Macauley. The habitat of this plant, as given by botanists, is decid- 
