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. 



By ROHERT CREENLEAF I.EAViri', A. M., of the Ames 



Botanical Laboratory. Prepared at the retiuest of the l^otan- 



ical Department of Harvard University. 



'"r^IIE practical exercises and e.xperiments have been so chosen that they 

 I may be performed by schools with even sim])le ai)paralus. I'he in- 

 •* structions for laboratory study are placed in divisions by themselves, 

 preceding the related chajners 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 s]5ecial 

 attention to ecology, but morpholot^y and physiology are also fully treated. 

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

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

 the index is very complete. 



New York 



American Book Company 



Cincinnati Chicago 



Boston 



PSYCHE 



A JOURNAL OF ENTOMOLOGY 

 Established in 1874 



I'ublishes technical papers by recognised authorities, and popular articles 

 characterized by high scieniitic accuracy, giving ]-)articidar attention to ex- 

 perimental work. .\ 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:— Keljruary, April, June, .-\ngnst, October, Decem- 

 ber. Annual subscription ( )ne Dollar. 

 Camhriuge Entomoi.oc.k ai. ( iim!, 23^ lierkeley St., Boston, l. S. .A. 



THE PLANT WORLD, 



An Illustrated Monthly Magazine of Popular Botany. 



$1.00 a year. Established 1897 la numbers 



Orticial Organ of the Wild Flower Preservation 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. 



