IMPORTANT FOR 



Teachers of Botany and General Biology 



Hacmatococcus has long !)ccn 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. TIaren, 

 illustrated with two colored plates, has just been published 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. 



Price, 50 cents; ten copies or more by express to one address at 

 half-price. 



Address, lUUtoVy Torrey Botanical Cliih, 



Colninl>ia University, New York City\ 



IMPORTANT TO 



Libraries and Botanical Laboratories 



The most important contrilnition to the knowled^^e of the Bryophytes uf this country 

 since the publication of Siillivant's Icones Muscoruin 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 Hellotype Plates. 



While this work is sjjccifically (leveled to West Coast Species, tlic illustrations, 

 which are die finest representation^ of tlie Hepaticae that have yet appeared, under 

 the n-ork of general and direct Interest to all students of botany. The work shi)uld be 

 in every library consulted by botanical students. Trice, luibound, $3.00, postpaid. 



:\dd 



CSS, /,. M. UNDERWOOD, 



Cohiinbia Vnivcrsity, New York City. 



