19211 TUCKER, BIBLIOGRAPHICAL NOTES 183 



Torrey and Gray. Flora of North America. 



Issued in parts, from 1838 to 1843, the "Flora of North America, con- 

 taining abridged descriptions of all the knowTi indigenous and natur- 

 alized plants growing north of Mexico, arranged according to the natural 

 system,*' presents the important question of the exact date of issue of each 

 part. These dates for vol. i arc given on the verso of the dedication 

 to Sir W. J. Hooker, but as most copies are bound without original covers 

 it is important to know also the pages comprised in each part. They 

 are, with their dates, as follows: 



Vol. i. 



Pt. 1 pp. 1-184 July, 1838 



2 " 185-3G0 Oct., 1838 



a 



a 



3 " 361-544 June, 1840 



" 4 " 545-711 June, 1840 



Vol. ii. 



rt. 1 pp. 1-184 May, 1841 



" 2 '' 185-392 April, 1842 



" 3 " 393-504 Feb., 1843 



Vol. i has a title-page bearing the dates 1838-1840, and an index. 

 Vol. ii was never completed, ending abruptly with page 504 at the con- 

 clusion of **Compositae," and without title-page. In the Arboretum 

 copy there is appended an ''Index to vol. ii of Torrey & Gray's Flora of 

 North America," which was compiled by G. C. Woolson and printed 

 some time previous to 1890, 



That it was the intention of the authors to publish more is indicated 

 by the last paragraph of the preface in vol, i, "A complete index of the 

 genera and species, and an enumeration of all the works which relate 

 to North American botany, or are cited in this work, will be given with 

 the concluding volume, and likewise, if space permit, some general ob- 

 servations respecting the geographical distribution of North American 

 plants. A connected notice of those plants which are important on 

 account of their active or medicinal properties or economical uses, will 



also be added." 



In Rhodora for December, 1906, under the heading, '*Two editions of 



Torrey & Gray's Flora of North America," Mr. IL W. Preston calls 

 attention to the fact that variations in the copies of the '* Flora" indicate 

 clearly that portions of vol. i were reprinted, '*an examination of the type 

 shows that pages 321 to 360 inclusive were reset in a slightly different 

 font." The copy in the library of the Arnold Arboretum has the reprinted 

 pages substituted, and in a letter from Miss Mary A. Day we find that 

 it differs from the original in the Gray Herbarium in the following re- 

 spects : 



"On page 324, line 34, the original has the name H[osackial micranthus, 



while the reprint has changed this to H. micrantha. On the following 



