252 



known waters with the usual beacon-lights of chemical identity 

 gone, I mean such data as melting points, crystalline form, and 

 so on. Finally, it seems that the publication of work such as 

 that of Dr. Osborne on the border-land of botany and chemistry 

 may bring together the two sister sciences which, too long, have 

 trod paths that are somewhat parallel but still too widely sepa- 

 rated. 



Ernest D. Clark 



Columbia University 



PROCEEDINGS OF THE CLUB 

 May 25, 1910 



The Club met at the Museum of the New York Botanical 

 Garden at 3:30 p.m. Dr. M. A. Howe occupied the chair. 

 Twelve persons were present. The minutes of the last meeting, 

 May 10, were approved. 



A letter was read from the recording secretary of the New 

 York Academy of Sciences in which he stated that he knew of no 

 arrangements whereby the expenses of popular lectures given by 

 the affiliated societies at the American Museum of Natural His- 

 tory could be met by the funds of the Academy. It was voted 

 that the treasurer of the Club meet the bills incurred at the 

 meetings of March 8 and April 12. 



First on the announced scientific program was a paper entitled 

 "Moss Notes" by Mr. R. S. Williams, of which the following is 

 an abstract prepared by the speaker. 



"Leucobryum or white-moss is so called from the structure of 

 the leaf which is about like Sphagnum in having the chlorophyll- 

 cells surrounded by hyaline, empty, porose cells, thus giving a 

 whitish appearance to the moss. The fruit, of course, is very 

 different from Sphagnum, much resembling that of Dicranum. 

 Leucobryums are chiefly tropical although the type of the genus, 

 L. glaucum, is widely distributed over Europe and in North 

 America from Labrador to Florida and westward to the Missis- 

 sippi valley. There have been over 120 species described, many 

 of which can scarcely be considered as well defined. Out of 

 some eighteen or twenty species credited to North and Central 



