32 Historical Sketch of the Science of Botany January, 
genera and seventy-two species were new, illustrated by twenty- 
five plates. In a separate report Dr. Engelmann described fifty 
Cactacee, of which eighteen were new and illustrated by twenty- 
four: plates, and Sullivant seventy-two mosses, with twelve new — 
ones and ten plates. Very instructive is the general description — 
of the soil, of the productions along the route, and the forest trees 4 
by Bigelow. . 
The route near the 32d parallel, from El Paso to Preston on ~ 
the Red river, was explored by Capt. Pope. Dr. Diffendorfer 
made the botanical collections, which contained 268 species, of | 
which three genera and thirteen species were new. The cata- 
logue is published by Torrey and Gray in Vol. 11 of thie Reports, © 
with ten plates. : 
Dr. A. L. Heermann was the naturalist under the command of 
Lieut. Williamson, who explored the passes in the Sierra Nevada — 
and the coast range. The catalogue of eighty-eight species, — 
amongst which were fourteen new ones, with eighteen plates, — 
described by Durand and Hilgard, we find in Vol. v, with a sepa- 
rate collection of the geologist, W. P. Blake, containing eighty- 
seven species, with six new ones and ten plates, described j ia 
Dr. Torrey. | 
Vol. vi contains the interesting botanical report of Dr. J. 5 a 
Newberry, geologist under the command of Lieut. Williamson 
when he explored the country between the Columbia river and | 
Sacramento river. Besides an article on geographical botany, he 
SPSS IAPA EARE TRIE e P Na TEDA E S A Re AEN CS Reet EEEE NOR E SE pe BENTA ST Moy amie EIIE C A pre De AREA PL Rea MCSD Ea rn ar ALLTA E TOAS TA 
with six plates, twenty mosses and ten lichens. He was after- 
wards a member of the expedition on the Colorado of the West, 
under the command of Lieut. Ives, in 1857-1858. The report 
examined by Gray, Torrey, Engelmann and Thurber, 400 species 
with ten new ones. 
Dr. Thomas Antisell collected, under the command of Lieut. } 
G. Parke, between the Rio Grande and Southern California, 281 
species (one genus and three species were new), which are pub- 
lished with eight plates in Vol. vir of the reports. 
The Mexican boundary survey began in 1849, and continued 
with an interruption, and after a reorganization under Major 
Emory in 1853, till bagi The mee of Emory was published 
