^ 



5@[euy ^0tk 2^otan£c^l Oiar&en 



Memoirs 



The first volume of Memoirs of the New York 

 Botanical Garden will be issued during 1899. It will 

 contain "An annotated Catalogue of the Flora of Montana 

 and the Yellowstone National Park," written by Dr. Per 



Axel Rydberg. 



The Memoirs will be published in large octavo size, as 



matter for them becomes available. Volume I. will consist 



of about 400 pages, and will contain descriptions of a large 



number of new species of plants and critical notes on many 



others. 



Subscriptions to this first volume are now invited. 



The price will be two dollars per copy. 



N. L. BRITTON, 



Director-in-Ohief. 



I 



A Text-Book of General Lichenology 



With Descriptions and Figures of the Genera Occurring in the Northeastern 



United States. 



L 



By ALBERT SCHNEIDER, M. S., M.D. 



The only modern work on North American Lichens, including a discussion of their 

 Morphology and Physiology, with a special reference to the phenomena of symbiosis. 



Large octavo, 230 pages, 76 fulLpage plates. Price in paper, net, $3,80; in cloth. 

 $4.25. Sample pages will be sent on application. 



PUBLISHED BV 



WILLARD N. CLUTE & COMPANY, Binghampton 



