NOTICES OF BOOKS. 383 
the fact of five out of ten plates of the Sikkim Rhododendrons being 
thus copied and sold cheap, but the gross misstatement of the cost of 
the original work, in large folio, being £5 sterling! We are not 
willing to say that this is a wilful misstatement in so respectable a 
man as M. Louis van Houtte; but this we will assert, that he ought 
to have known better. His name stands in the published list of sub- 
scribers to the volume, and as such he might have known that 16s. is 
the cost (a price actually not sufficient to cover the bare expenses of 
the publication) ; or £1 ls. to non-subscribers. Verbum sat. 
NOTICES OF BOOKS. 
Botany of the UNITED STATES EXPLORING EXPEDITION. 
Though tardily (considering that Capt. Wilkes’ voyage was undertaken 
between the years 1838—42), we are happy to learn that the American 
Government has decided on publishing an account, in a manner worthy 
of that truly great nation, of the plants collected by the naturalists of 
the Expedition. This work is entrusted to the charge of Dr. Asa 
Gray, the distinguished Professor of Botany in Harvard University, 
U.S. A. That gentleman is now on a visit to Europe, for the purpose 
of inspecting the various Herbaria which may assist him in so impor- 
tant an undertaking ; and we are sure that he will do justice to the 
publication. A notice of the extent of these collections has been 
already given in the * London Journal of Botany,’ and, if we understand 
correctly, the species collected on the North American continent will 
be incorporated with the Flora of that country of Messrs. Torrey and 
Gray. e 
SULLIVANT, WILLIAM S.: Contributions to the BRYOLOGY and HEPA- 
TICOLOGY of NORTH America. Part II. 4to. From the Me- 
moirs of the American Academy of Arts and Sciences. Vol. IV: 
New Series. 
We are glad to see a second part of Mr. Sullivant’s labours in the 
field of Bryology and Hepaticology, the first of which we had occasion 
to mention in very high terms. And the second is no less important. 
It describes and figures with great clearness—1. Leskea Fendleri, n. sp.; 
2. Schistidium ambiguum, n.sp. ; 3. Fissidens Ravenalii, n.sp.; 4. Bryum 
