New Botanical Text-Books. 



* # * Prepared under the personal supervision of Prof. Asa Gkay, of Harvard 

 University, and forming a part of Gray's Standard Series of Botanies. 



GRAY'S BOTANICAL TEXT-BOOK, 



In 4 vols., each complete in itself, and the whole forming a comprehensive Botan- 

 ical Course for Colleges, Institutes of Technology and Private Students. 



Vol. I. STRUCTURAL BOTANY; Or, Organography on the basis of Morph- 

 ology, to whieh is added the principles of Taxonomy and Phytography and a 

 Glossary of Botanical Terms, by Asa Gray, LL.D., etc., Fisher Prof, of Nat. 

 Hist, in Harvard University. 8vo, cloth. 454 pages. Price, by mail; $2.30. 



J"u.st issued. 



Vol. II. PHYSIOLOGICAL BOTANY: Outlines of the Histology of Phaeno- 

 gamous Plants. Vegetable Physiology. By George Lincoln Goodale, A.M., 

 M.D., Professor of Botany in Harvard University. 1 vol., 8vo, cloth. 560 

 pages. Price, by mail, $2.30. 



Vol. III. INTRODUCTION TO CRYPTOGAMIC BOTANY. By Prof. "Wil- 

 liam G. Farlow. (In preparation.) 



Vol. IV. THE NATURAL ORDERS OP PHAENOGAMOUS PLANTS. By 

 Trof. Asa Gray. (In preparation.) 



FOR WESTERN STUDENTS- Now Ready. 



COULTER'S MANUAL OF THE BOTANY OF THE ROCKY MOUNTAINS. 



For the use of Schools and Colleges between the Mississippi and the Rocky 



Mountains. By Prof. John M. Coulter, Ph.D., Wabash College. 8vo, cloth. 



496 pages. Price, by mail, $1.85. 

 GRAY AND COULTER'S TEXT-BOOK OF WESTERN BOTANY. Consisting 



of Coulter's Manual of the Rocky Mountains, to which is prefixed Gray's Lessons 



in Botany. Price, by mail, $2.50. 



1ST early IR-eady. 



COULTER'S MANUAL OF THE BOTANY OF THE ROCKY MOUNTAINS. 

 Tourist's Edition. Light strong paper, flexible leather cover. 8vo. 496 pages. 

 Price, by mail, $3.00. 



For terms of introduction, etc., address the Publishers, 



IVISON, BLAKEMAN, TAYLOR & CO., 753-755 Broadway, N. Y. 



AMERICAN JOURNAL OF SCIENCE. 



Founded by Professor £illiman in 1818. 



Devoted to Chemistry, Physics, Geology, Physical Geography, Mineralogy, 

 Natural History, Astronomy, and Meteorology, and giving the latest discoveries 

 in these departments. 



Editors: James D. Dana and Edward S. Dana. 



Associate Editors : Professors Asa Gray, J. P. Cooke, Jr., and John Trow- 

 bridge, of Cambridge, H. A. Newton and A. E. Verrill, of Yale, and G. F. 

 Barker, of the University of Pennsylvania, Philadelphia. 



Two volunes of 480 pages each, published annually in MONTHLY NUMBERS. 



This Journal ended its first series of 50 volumes as a quarterly in 1845, and its 

 second series of 50 volumes as a two-monthly in 1870. The monthly series com- 

 menced in 1871. 



Twenty copies of each original communication are, if requested, struck off for 

 the author without charge ; and more at the author's expense, provided the num- 

 ber of copies desired is stated on the manuscript or communicated to the printers 

 of the Journal. 



The title of communications and the names of authors must be fully given. 

 Articles should be sent in two months before the time of issuing the number for 

 which they are intended. Notice is always to be given when communications 

 offered, have been, or are to be, published also in other Journals. 



Subscription price $6 ; 50 cents a number. A few complete sets on sale of 

 the first and second series. 



Address the Proprietors, 



J. D. and E. S. DANA, New Haven, Conn. 



