6 TRANSACTIONS OF THE [oCT. 3, 



swoi-d-shaped, flat and nearly as long as the bod}' of the achene. 

 The species ranges from the maritime Provinces of Canada to 

 Minnesota, south at least to Pennsylvania and Kentucky. I am 

 not sure that it occurs further south and it is certainly most 

 abundant northward 



6. Ranunculus palmatus, Ell. Sk. Bot. S. C. and Ga. ii. 60, 



(1824). 



This plant of pine-barren swamps and river-shores of South 

 Carolina, Georgia and Florida, included in R. septenlrionalis by 

 Dr. Gra3% bvit maintained as a S2:)ecie.s in Dr. Cha])man's 

 Southern Flora, appears to me as perfectly distinct. It is a 

 very weak, slender species, forming long runners, is somewhat 

 hirsute or glabrous, and has ternately divided, comparatively 

 small thin leaves with obtuse, cleft and dentate segments. The 

 flowers in specimens from Dr. Chap)iian are less than a half- 

 inch broad, the achenes are few (3-6), oblong, very broadly 

 margined and provided with a stout, flat, sword-shaj^ed beak. 



These six species may be briefly diagnosed as follows : 



Beak of the achene less than half its length. 



Petals much longer than the spreading repals. 1. R. repens. 



Petals equalling or shorter than tliereflexed Sepals. 2. R. Macoimii. 

 Beak of the achene more tlian half its length. 



Beak subulate, curved. Leaf-segments b road, oblong or obovate. 



3. R. his2)idns. 



Leaf -segments narrow, oblong-linear. 4. R. fascicularis. 



Beak stout, triangular, sword-shaped . 



Leaf-segments acute; flowers large. 5. R. septentrionalis. 



Leaf -segments obtuse ; flowers small. 6. R. palmatus. 



Prof. Martin exhibited samples of Rock Salt from the mines 

 at Leroy and Livonia near Rochester, N. Y. 



Remarks on Summer Work were made b}^ Mess. Britton, Bol- 

 ton, Casey, Jacoby, Rees, Osborn, Dean, Martin, Wilson and 

 others. 



Prof. Osborn announced that the Section of Biology would 

 organize after the adjournment of the Academy and invited 

 members to take part. 



Meeting adjourned. 



