A Model Botanical 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 ROBERT (;RKKNLEAF I.EAVITT, A. M., of the Ames 

 Botanical Laboratory. Prepared at the request 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 simple apparatus. The in- 

 structions for laboratory study are placed in divisions l)y themselves, 

 preceding the related cha])ters of descriptive text. The book combines the 

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

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

 attention to ecology, but morpholo<jy 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 verv complete. 



American Book Company 



New York Cincinnati Chicago Boston 



PSYCHE 



A JOURNAL OF ENTOMOLOGY 

 Established in 1874 



Publishes technical papers by recognized autliorities, 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 si)ace is given to prol)lems connected with the insect 

 fauna of New England. 



Six Numbers a year.— Fel)ruary, April, June, ;\ugust, ( )ctol)er. Decern 

 ber. .'\nnual subscription One Dollar. 

 Camhridck Enio\|(ii ocicai, ('mm;, 234 llfikeley St., Boston, T . ,S. A. 



THE PLANT WORLD, 



An Illustrated Monthly Magazine of Popular Botany. 



$1.00 a year. Established 1897 la numbers 



Official Organ of the Wild I"'lo\ver Preservation Society of America. 

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

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

 by ki^eping ytni in touch with modern botanical thought. 

 Edited by Francis E. Lloyd 



Teachers College, Columbia University, 

 vSend twr) cent stamp loi sample copy. New York City. 



