VOL. IV. | Dates of Botanical Works. $71 
t 7, pp. — in 1840 (Heterocentron, etc., and several cited by 
ake | in that year), 
Part 8, pp. 337- wee in 1840 (Atenia, etc.) 
Part 9, pp. 385-432, in 1841? (Grayia, ete., cited by Endlicher in 1842). 
Part Io, pp. 433-(486), in 1841 (Sinclair 
The latter half of the work is sigatias pet to doubt, soe Silliman’ s Jour- 
nai, X¥XxXix. (1840), pp. 172-3, states that parts 9, 11, and 12 came out in 1839 
or 1840, the twelfth being the conclusion; and, if ae, this shows that 
the latter parts were not of the same dimensions as the first part. Itis in 
this direction that I seek for further information from any Botanist or 
Librarian | can enlighten me.’—B. DayboN Jackson, in /ournal of 
Botany, Oct., 
The her extracts from Silliman’s Journal show the 
approximate dates of the concluding parts of Botany Beechey 
and the Flora Boreali-Americana. It must be remembered, 
however, that communication at that time was not so frequent 
and so rapid between Europe and America as at present, and 
that we have no means = knowing how long the papers were in 
the rer: of the edito 
Hooker and Arnott, the is of Capt. Beechey’s Voyage, etc., Part ix., 1840. 
( (Loon) thi ork has extended to four hundred and thirty-two Givarto 
pages, and ata: ‘anit will perhaps complete the work, but of this 
we are uncertain. e number of A sei wep igtt cited is ninety-nine, of 
which eighty-nine are published. —Silliman’s Journal, xxxix, 
N 
Hooker and Arnott’s Botany of Capt. Beechey’s Voyage; part 10, 1841 (tab. 
90-99).—The tenth and last fasciculus of this work eombiudes the account of 
index. The ten plates it comprises are nearly all devoted to Californian 
plants described in prior fasciculi; among which Prerostegia, a curious Poly- 
gonaceous genus, 4nemopsis Californica of Nuttall, and Lophochiena of Nees, 
a singular grass, are the most remarkable—Si//iman’s Journal, xli, 374, 
July-Sept., 1841. 
Zora Boreali-A mericant, or the Botany of the Northern saath of 
Pp 
Hooker's Flora Boreali-Americana, or the Bitkay ee ia Northern parts of 
British America, 2 vols. 4to. 182-940.—The twelfth part, which contains the 
