226 Miscellanies. 
of dried plants will be offered to subscribers, in sets, as they come to 
hand. Two of these collectors, Mr. Charles A. Geyer, (well known as 
the botanist of Mr. Nicollet’s official northwestern expedition,) and Mr. 
Liiders, who are for the present attached to Sir. Wm. Stewart’s party, 
have by this time reached the Rocky Mountains. The particular field 
of Mr. Geyer’s operations, and the extent of his journey, were undeci- 
ded at the time of his departure from St. Louis. Mr. Liders expects 
to spend the next winter, and perhaps the ensuing summer, at a station 
of some Roman Catholic missionaries on the upper waters of Lewis 
and Clarke’s, or Great Snake River. ‘These botanists being well ac- 
quainted with the vegetation of the general Valley of the Mississippi 
and of the lower Missouri, will doubtless avoid the common and better 
known plants of this region; and thus their collections may be expect- 
ed to prove unusually choice and valuable. 
The third collector, Dr. Lindheimer, a very assiduous botanist, in- 
tends to devote a few years to the exploration of Texas; and he pledg- 
es himself to exclude from his sets all the common plants of the south- 
western United States. 
These several collections will be assorted and distributed, and for the 
most part ticketed, by Dr. Engelmann of St. Louis; assisted, as far as 
need be, by the authors of the Flora of North America, who promise 
to determine the plants, so far at least as they belong to families pub- 
lished in that work; and for the information of subscribers, particular 
notices of the centuria offered for sale, will probably appear in this 
Journal, as they come to hand. The number of sets being limited, ear- 
lier subscribers will receive a preference. ‘The three explorers are en- 
tirely independent of each other; and their collections are to be sepa- 
rately subscribed for. 
The price of the Rocky Mountain collections of Geyer or of Li- 
ders, is fixed at ten dollars (or two guineas) per hundred; that of Dr. 
Lindheimer’s Texan collections at eight dollars (or £1, 13s. 6d. sterling) 
per hundred—payable on delivery of the sets at St. Louis, Missouri, by 
Dr. George Engelmann; at New York by Wiley & Putnam, 161, 
Broadway, and Stationers’ Hall Court, London; and Prof. A. Gray, of 
Harvard University, Cambridge, Massachusetts, to either of whom sub- 
scribers may address themselves (post paid) by mail. ‘The additional 
expense of transportation, doubtless trifling in amount, will be charged 
upon the sets deliverable in London. 
The writer of this notice cheerfully states that the dried specimens 
made by these botanists which have fallen under his observation, are 
well selected, very complete, and finely prepared; and he cordially 
joins Dr. Engelmann in recommending the enterprise to the patronage 
of botanists. 
