404 RESULTS OF THE JOURNEYS 
dian, occultations of satellites, eclipses, &c. ; a trea- 
tise on astronomical refractions under the torrid 
zone, considered as the effect of the decrement of 
caloric in the strata of the atmosphere; the baro- 
metric measurement of the Andes of Mexico, Vene- 
zuela, Quito, and New Grenada; together with a 
table of nearly 700 geographical positions. The 
greatest pains have been taken to verify the calcu- 
lations. Our author presented to the Bureau des 
Longitudes his astronomical observations on the lu- 
nar distances and the eclipses of Jupiter’s satellites, 
together with the barometrical elevations, which 
have been calculated and verified by M. Prony ae- 
cording to the formule of La Place. 3 
In 1817 Humboldt laid before the Académie des 
Sciences his map of the Orinoco, exhibiting the 
junction of that river with the Amazon by means 
of the Casiquiare and Rio Negro. 
The brief account of New Spain, which is pre- 
sented in the preceding pages, has been extracted 
from the Essat Politique sur la Nouvelle Espagne, - 
originally published in 2 vols. 4to, and translated 
into English. With respect to Humboldt’s trans- 
lators it may be remarked, that their want of scien- 
tific knowledge, and more especially of natural his- 
tory, renders the English very much inferior to the 
French editions. 
Most of the above-mentioned publications have ap- 
peared in the names of both travellers. The various 
works relating to the journey will make, when com- 
plete, twelve volumes in quarto, three in folio, two 
collections of geographical designs, and one of pic- 
turesque views. The detailed narrative of the expe- 
dition occupies four of these Begin ; but an octavo. 
a a Le ee ete ee ee 
