A Model BoLanical Text>-Book 



LEAVITT'S OUTLINES OF BOTANY, $1.00 



With Gray's Field, Forest and Garden Flora, . 1 .80 



With Gray's Manual of Botany, .... 2.25 



For the High School Laboratory and Class Room. 



Hy 



ROBERT GREENLEAF LEAVITT, A. M., of the Ames 

 Botanical Laboratory. Prepared at the recjuest of the Botan- 

 ical Department of Harvard University. 



THE practical exercises and experiments have been so chosen that they 

 may be performed by schools with even simjjle apparatus. The in- 

 structions for laboratory study are placed in divisions by themselves, 

 preceding the related chapters of descri])tive text. The book combines the 

 best features of the newest methods with that lucidity and definiteness which 

 have given Dr. Gray's text-books their extraordinary success. It pays special 

 attention to ecology, but morphology and physiology are also fully treated. 

 The illustrations number 384, and have been drawn with great care and 

 accuracy. The appendix contains valuable suggestions for the teacher, and 

 the index is very complete. 



American Book Company 



New York Cincinnati Chicago Boston 



PSYCHE 



A JOURNAL OF EN rOMOLOGY 

 Established in 1874 



Publishes technical papers by recognized authorities, and |)o])ular articles 

 characterized by high scieniific accuracy, giving ]Kirticular attention to ex- 

 perimental work. A synopsis of current entomological literature appears in 

 each number. Much space is given to problems connected with the insect 

 fauna of New England. 



Six Numbers a year: — February, .\pril, June, August, October, Decem- 

 ber. Annual subscription One Dollar. 

 Camkrtdgk EntoMolock-AI. (^I.UH, 234 ]?crkeley St.. Boston, I'. S. A. 



THE PLANT WORLD, 



An Illustrated Monthly Magazine of Popular Botany. 



$1.00 a year. Established 1897 12 numbers 



Otificlal Organ of the Wild Flower {'reservation Society of America. 

 If you are interested in Botany the PLANT WORLD will interest you. 

 If you are a teacher of Botany, the PLANT WORLD will help you 

 by keeping you in touch with modern botanical thought. 

 Edited by Francis E. Lloyd 



Teachers College, Columbia University, 

 Send two cent stamp for sample copy. New York City. 



