A Model Botanical TexL-Book 



LEAVITT'S OUTLINES OF BOTANY, $1.00 



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



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



For the High School Laboratory and Class Room. 



By ROBERT GREEXLEAF I.EAVITT, A. M., of the Ames 

 Botanical Laboratory. Prepared at the request of the Botan- 

 ical Department of Harvard University. 



"piIE practical exercises and experiments have been so chosen that they 

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

 structions for laboratory study are placed in divisions by themselves 

 precedmg the related chapters of descriptive text. The book combines the 

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

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

 attention to ecology, but morpholog^y and phvsiologv are also fully treated 

 The illustrations number 3S4, and have been drawn with great care and 

 accuracy. I he appendix contains valuable suggestions for the teacher and 

 the index is very complete. 



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American Book Company 



Cincinnati Chicago 



Boston 



PSYCHE 



A JOURNAL OF ENTOMOLOGY 



Established in 1874 



Publishes technical papers by recognized authorities, and popular articles 

 characterized by high scientific accuracy, giving, particular 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 xN'umbers a year:-- February, April. June, August, October, Decem- 

 ber. Annual subscription One Dollar. 

 Camkridgk ENToMoi.or.iCAi. CiuH. 234 Berkeley St., Boston, T. S. A. 



THE PLANT WORLD, 



An Illustrated Monthly Magazine of Popular Botany. 



$'•0° a year. Established 1897 ,a numbers 



Official Organ of the Wild Flower Preservation Society of America. 

 If you are interested in liotany the PLANT WORED 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. 



