IN AMERICA. 403 
dans I’ Ile de Cuba, dans les Provinces de Cara- 
cas, de Cumana, &c. 2 vols. fol. 
3. Monographie des Melastomes. 2 vols. fol. 
4. Nova Genera et Species Plantarum. 3 vols. fol. 
5. De Distributione Geographica Plantarum se- 
cundum Celi Temperiem et Altitudinem Montium 
prolegomena. 8vo. 
The Essay on the Geography of Plants presents 
a general view of the vegetation, zoology, geological 
constitution, and other circumstances, of the equi- 
noctial region of the New Continent, from the level 
of the sea to the highest summits of the Andes. 
The second work is by M. Bonpland, and contains 
methodical descriptions, in Latin and French, of 
the species observed ; together with remarks on their 
medicinal properties and their uses in the arts. 
The Monography of the Melastome, which is also 
from the pen of M. Bonpland, contains upwards of 
150 species of these plants, with others collected by 
M. Richard in the West Indies and French Guiana. 
In his Essat Géognostique sur le Gisement des 
Roches dans les deux Héemisphéres, published in 
1826, and translated into English, Humboldt pre- 
sents a table of all the formations known to geolo- 
gists, and institutes a comparison between the rocks 
of the Old Continent and those of the cordillera of 
the Andes. 
The astronomical treatises have been published 
in two quarto volumes, under the title of Recueil 
d@ Observations Astronomiques et de Mesures exé- 
cutées dans le Nouveau Continent. This work con- 
tains the original observations made between the 12th 
degree of south latitude and the 41st degree of north 
latitude, transits of the sun and stars over the meri- 
