91 
on the forest trees of Northern California and Oregon has become 
a classic in the literature of North American forestry. 
Shortly after the completion of his work on this expedition he 
was attached to the party of Lieut. Jos. C. Ives which explored 
the Colorado River in 1857-1858, as physician and naturalist. 
The party assembled in San Francisco in the month of October, 
1857, and sailed from that port November Ist, on a schooner for 
the mouth of the Colorado River. They passed Cape St. Lucas 
the seventh day out, but the progress of the vessel up the Gulf of 
California was so retarded by head winds that the point of desti- 
nation was not reached until November 28. The vessel was un- 
loaded during the next five days, and a start made up the river in 
a small steamboat which had been brought along. Fort Yuma, at 
the mouth of the Gila River, was reached on January 5, 1858, 
Bill William’s Fork on February 1, the «« Needles” near the mouth 
of the Mohave Cafion on February 7, that of the Black Cafion on 
March 8, and the Big Cafion early in April. They then left the 
river, ascended the Colorado Plateau and proceeded eastward 
past the San Francisco Mountains, reaching Fort Defiance on 
May 22, thence to Santa Fé and Fort Leavenworth, and then to 
the Atlantic Coast. 
Dr. Newberry accumulated extensive collections on this expe- 
dition. He wrote the Geological Report. The plants were 
worked up by Drs. Gray, Torrey and Engelmann, and the Zoé- 
logical Report was elaborated by Professor Baird. 
In 1857 he was appointed Professor of Chemistry in the Co- 
lumbian University, Washington, D. C., a position which he held, 
however, for a short time only. 
In 1859 he was attached to the party of Capt. J. N. Macomb 
which traversed the region from Santa Fé to the junction of the 
Grand and Green Rivers of the Colorado of the West. The ex- 
pedition set out from Santa Fé about the middle of July, and pro- 
ceeded northwestwardly up the Rio Chama and across the 
divide to the headwaters of the San Juan River into southwestern 
Colorado and Utah, and back by another route to Santa Fé in the 
autumn. Dr. Newberry wrote the geological part of the report, — 
which was, however, not published until 1876. It includes de- ne 
nse and = of a large number of Triassic Acme oe 
