272 The Ohio Naturalist. [Vol. XI, No. 3, 



Coagulated Latex. The coaglum is plastic and can be moulded 

 into cakes resembling some of the cheaper grades of rubber. 

 The whey contains mineral matter and sugar. 



Caoutchouc. Obtained from the coaglum. Is flabby; lacks 

 strength and finnness; is high in gravity. Responds to the sulfur 

 chloride and bromine tests. Yield of rubber, on basis of latex, 

 is 2 to .3^7. 



Resin. White, tasteless, odorless. Gives "asclepione, " 

 described by Watts as "radiating crystals insoluble in water and 

 alcohol, and is not attacked by dilute caustic." 



This plant has been suggested as a source of crude rubber. 

 The project has engaged the serious attention of several parties 

 during the past twenty years. A careful stud\- of the question, 

 covering a period of twelve years, indicates that while rubber is a 

 product of the plant, the amount is so small, its quality is so 

 inferior, and its cost of production is so high, that a profitable 

 industry is out of the question. 



Ortox Hall, October 3, 1910. 



The meeting was called to order by the President, and the 

 minutes of the previous meeting were read and approved. 



Professors J. H. Schaffner, J. S. Hine, and J. A. Hambleton 

 were appointed to act as a committee to nominate officers for the 

 year. 



The program consisted of reports on Summer Work by the 

 members. 



Prof. W. R. Lazenby made some observations on the trees, 

 and spoke of the scarcity of seed this year. 



Prof. Schaffner spoke of his obser^■ations on leaf markings, and 

 the relation of plants to the substratum. 



Prof. Hine carried on his study of the mammals of the state 

 during the summer. 



Prof. Hambleton sjoent the most of the summer at the Lake 

 Laboratory. 



Aliss Detmers gave a few observations on her work at Buckeye 

 Lake. 



C. L. Metcalf reported good early collecting this year for the 

 entomologist, his special group being the Syrphidae. 



B. W. Wells spent the earlier part of the summer at the Lake 

 Laboratory. 



B. F. Fulton made some observations on birds. 



Lionel King reported a profitable summer at the Botanical 

 Gardens in Cleveland. 



M. G. Dickey, Secretary. 



Date of Publication, January 16, 1911. 



