BOTANICAL INFORMATION. 59 
to 8,000 feet; mean temp. 59°.—Twenty-four from 6,000 to 
7,000 feet; mean temp. 62°.—Thirty-two at from 5,000 to 
6,000 feet; mean temp. 659.— Hence, in descending, they 
diminish; for there are but eight species at from 4000 to 
5000 feet; with a mean temperature of 68°.—Five at from 
3000 to 4000 feet; mean temp. 71°; and only four at from 
2000 to 3000 feet, where the mean temperature is 75°. 
Professor Jamieson, of Quito, detected an Oncidium (O. 
nubigenum, Lindl) at an elevation of 14,000 feet above the 
level of the sea. Mr. Linden remarks that the Epidendrum 
frigidum, which only grows at a short distance from eternal 
snow, is covered all over, flowers included, with a varnish, 
perhaps intended for its safeguard ; and Dr. Lindley observes 
that all the Epidendra (in this collection) with one exception, 
occur above 5000 feet, and form a continued chain of species 
up to tbe habitat of E. frigidum. 
Cu. Martins: Voyage Botanique le long des côtes septen- 
trionales de la Norvège, depuis Drontheim jusqu'au Cap 
Nord. 
This useful brochure, being an extract from the “ Voyages 
en Scandinavie et au Spitzberg de la corvette, la Recherche,” 
commences abruptly, and the objects and motives of the 
voyage are in no way explained. M. Martins appears to have 
been attached to the Expedition as Botanist, and his attention 
to have been especially devoted to the geographical dis- 
tribution of plants and a comparison between the vegetation 
of different countries in the middle and north of Europe : | 
and he seems to have made good use of his time 
and to have studied vegetation with great ardour, as a : 
nected with latitude and longitude, elevation above the level - e£ 
of the sea, climate, temperature, atmospheric influence, dn —-— 
Such a work hardly admits of extracts. It will 
interest, and constitutes an im ortant addit 
edge of this department of Botany. 
