GRAY'S BOTANICAL TEXT-BOOK 



CONSISTS or 



VOL. I. STRUCTURAL BOTANY. By ASA GRAY. 



II. PHYSIOLOGICAL BOTANY. By GEORGE L. GOODALE. 



III. INTRODUCTION TO CRYPTOGAMIC BOTANY, BOTH 



STRUCTURAL AND SYSTEMATIC. By WILLIAM G. 

 FARLOW. (In preparation.) 



IV. SKETCH OF THE NATURAL ORDERS OF PH^NOGAMOUS 



PLANTS; their Special Morphology, Useful Pro- 

 ducts, &c. (In preparation.) 



