IMPORTANT FOR 



Teachers of Botany and General Biology 



4 



Haematococcus has long heen recognized as one of the most valuable 

 one-celled motile plants for demonstration and study with elementary 

 classes in biology. Many teachers have difficulty in finding the ma- 

 terial. A memoir on this interesting organism, by Mr. T. E. Hazen, 

 illustrated with two colored plates, has Just been pul)lished in the 

 Memoirs of the Torrey Botanical Club, volume six, part three, in which 

 the entire life-history has been carefully described and figured, and 

 numerous errors of the ordinary text-books corrected. The brochure 

 is specially adapted for the use of elementary students in botany and 



general biology, and can be secured for classes at special rates as noted 

 below. 



50 



half-price. 



T^ditoTj Torrey Botanical Club, 



Cohimhia University, New York City. 



IMPORTANT TO 



■ 



Libraries and Botanical Laboratories. 



The most important contrlluitioa to the Ivnowledge of the Bryophytes of tliis country 

 since the publication of SuUivant's Icones Muscornm has recently appeared as Volume 

 Seven of the Memoirs of the Torrey Botanical Club, entitled, 



The Hepaticae and Anthocerotes 



of California, 



By MARSHALL AVERY HOWE, of Columbia University, 



With Thirty-Five Heliotype Plates. 



While this work is specifically devoted to West Coast Species, the illustrations, 

 \vhich are the finest representations of the Hepaticae that have yet appeared, render 

 tlie noih of p[eneral and direct interest to all students of botany. The work should be 

 in every library eonsuUed by botanical students. Price, unbound, $3.00, postpaid. 



Address, i,. M. UNDERWOOD, 



4 



Columbia University, New York City. 



