Prom Henry P. SarHcell, M.D., of Pcnnyan, N. Y. 



After a thorough examination of Wood's Class-Book of Botar-y. 

 have no hesitation in pronouncing it superior to any work now in u; 

 as a text-hook^ and every way better adapted to the use of beginner.- 

 The analytical tables are a great improvement, and will very much as 

 sist the student in the analysis of plants. The union also of Physiolo 

 gical and Practical Botany will be duly appreciated by the botanica 

 student, I have compared many of Mr. Wood's descriptions with thi 

 plants, and find them uncommonly correct. I shall take pleasure ii 

 recommending the work, as a text-book, in all our schools where th' 

 science is taught. HENRY P. SARTWELL, M.D. 



From President Hitchcock, of Amherst College. 



I have examined with a good deal of interest, Mr. Wood's Class 

 Book of Botany ; and I am glad to find that it comes nearer whai 

 seems to me to be wanted in most of our Colleges and Academies, thar 

 any work with which I am acquainted. But what will render Mr 

 Wood's work peculiarly acceptable to a large portion of students, is. 

 that while he has given a condensed summary of structural and physio 

 logical botany, he has added descriptions of all the native and most ol 

 the cultivated plants of the United States north of the latitude ot 

 Washington, D. C, and thus rendered it unnecessary for the scholai 

 to obtain two separate works. And though this may seem to some tc 

 be truckling to a penny-wise system of economy in the study of science, 

 yet with a large proportion of students in the country, the alternative 

 lies between adopting it and not studying plants at all. The work of 

 Mr. Wood appears to me extremely well adapted to most of our Col- 

 leges and Academies. His tables of Analysis appear to me to be an 

 improvement upon the analogous tables presented by Lindiey in hif^ 

 Ladies' Botany ; and they must afford much assistance to the beginner 



EDWARD HITCHCOCK, 



President of Amherst College- 

 Prom Dr. Gould, Boston. 



I have examined the "Class-Book of Botany," by Alphonso Wood 

 and think it well designed and well executed. The elementary portion 

 is brief but comprehensive, conforming to the latest discoveries in vege- 

 table physiology, and v/ell illustrated by wood-cuts. The definitions- 

 are perspicuous and well arranged. The classification according toth» 

 Natural System is accompanied by ingenious synoptical tables, leading 

 to the discovery of the genera under their Natural Orders. It professes 

 to give also a Flora of the Northern United States; and so far as I can 

 judge, the catalogue of plants is very complete, and the descriptions of 

 them seem sufficiently accurate and minute, so as to leave little else to 

 be desired by the student of Botany. Combining, as it does, so good a 

 digest of elementary and descriptive botany ibr the region, in 90 small 

 a space, it appears to me worthy of high commendation, and destined to 

 extensive use. AUGUSTUS A. GOULD. 



Prom the American Journal of Arts and Sciences. 



This work is constructed on the Natural System, and has been a great 

 desideratum for several years. Its elements o[ Botanical Science con- 

 tain a faithful, clear and definite view of the principles taught by Dt 

 Candolle, Lindiey, Gray, Torrey, &.C., the Classes, Orders and Generp 

 are all founded on the same authorities, and its descriptions of speci 

 mens, comprising all the plants of New England, the Middle and West 



