WBT AI"*n DRY 



Cryptogamic and 



PLANT MATERIAL 



collected and preserved especially 



Microscopes, Lenses, Cover Glasses and Slides, Forceps, Scalpels and Needles. 

 " Laboratory Note Book " of high grade Drawing Paper with alternate blank 

 and ruled pages. Glassware, Stains, Mounting Paper, etc. 



Cambridge Botanical Supply Co., 



CAMBRIDGE. MASS. 



— — - ,- t - | ^ 



Everything Useful to Botanists. 



Living Plants and Their Properties 



By Prof. J. C. ARTHUR, Purdue University, and 



Prof. D. T. MacDougal, Hedford Park, New York City. 



A timely book of 12 chapters dealing with the special senses of plants, development of irrita- 

 bility, compass plants, sensitive plants, effects of cold, growth of leaves, significance of color, com- 

 parison of plants and anirni Is, etc., in a non-technical manner. Original illustrations, interesting, 

 comprehensive and thoroughly modern. Printed on enamelled paper, 30 illustrations, 242 -f 8 pages, 

 marginal sub titles. Handsomely bound in cloth Postpaid, $1 25. 



Send orders to Dr. D. T. MacDougal, Bedford Park, New York City, or to Morris and Wil- 

 son, University Book Store, Minneapolis, Minn. 



COMMENTS. 



It is a collection of delightfully written essays on certain of the more important and interesting 

 features of li ving plants in the broadest sense. The facts set forth are in all cases the latest resul s ol 

 investigation in the various lines, and the language is simple and non -technical. — Plant World. 



The book will make an admirable addition to the scientific alcove ot every pi I lie library. — Prof. 



C. E. BESbEY. 



It is an interesting volume to all who care to know what science has recently discovered in 

 physiology and pathology of the vegetable kingdom. — New York World. 



A Text-Book of General Lichenology 



With Descriptions and Figures of the Genera Occurring in the Northeastern 



United States. 



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 full-page plates. Price in paper, net, $3.80 / in cloth. 

 $4.25. Sample pages will be sent on application. 



PUBLISHED BY 



WILLARD N. CLUTE & COMPANY, Binghampton, N. Y. 



Back numbers of the Bulletin of the Torrey Botanical 

 Club wanted to complete files, as follows: 



Vol. 7 ( 1880) Nos. 1, 9. Vol. 14 (1887) Nos. 1, 2. 



Vol. 8 (1881) Nos. 2, 10, 11. Vol. 15 (1888) any numbers. 



Vol. 9 ( 1882) Nos. 1, 5. Vol 16 (1889) Nos. 3, 4. 



Vol. 11 (1884) Nos. 1, 2, 3 Vol. 17 ( 1890) N6s.(4 8, 9, 10, 12. 



Vol. 12 (1885) Nos. 1, 2, 3: Vol. 18 (1891) No. 1. 



Contributions of duplicate numbers requested of members of the Club. Other! 

 possessing numbers invited to state prices. 



Address TORREY BOTANICAL CLUB. 



Columbia university, New VorkCitv 



