156 TRANSACTIONS OF THE [Mar. 27 
March 5, where an accident ended the steamboat voyage. The 
exploration of the Canon was continued thirty miles farther, 
then the party returned to Mojave Valley and March 24 the 
steamboat ‘‘ Hxplorer” was sent back to Fort Yuma. The party 
with escort left the river, explored the Colorado Plateau some 
distance, then struck eastward past the San Francisco Mountains, 
reached Fort Defiance May 22, and returned east via Santa Fé 
and Fort Leavenworth. Dr, Newberry ever after took great 
interest in the Moquis tribes with which he became acquainted 
upon this trip. 
The report of the Ives Expedition was published in 1861. 
The geological report covers all the region which Dr. Newberry 
traversed from San Diego to Fort Leavenworth, and was the 
first detailed description of the lower Colorado region. * 
The year following Dr. Newberry was again in the field as 
geologist of the San Juan Exploring Expedition, under Capt. J. 
N. Macomb. This expedition started from Santa Fé about the 
middle of July 1859, passed up the valley of the Rio Chama, 
across the continental divide to the head waters of the San Juan, 
thence into southwestern Colorado and southeastern Utah to 
near the junction of the Grand and Green rivers, and returned 
by a circuitous route to Santa Fé in November. On account of 
the demoralization caused by the war the report on the geology 
and paleontology was not published until 1876. It is impor- 
tant to note that it was then printed exactly as written sixteen 
years earlier, That it should have been published so long after 
the work was done and subsequent to other work in the region 
is proof of its value, and of Dr. Newberry’s confidence in the 
accuracy of his own earlier work. 
The outbreak of the war of the rebellion found Dr.Newberry in 
Washington, in the service of the War Department, with which he 
had been connected for five years as Assistant Surgeon. In the 
supreme hour of his country’s peril he forsook his scientific work 
and gave to the nation the benefit of his medical training. On 
the 14th of June 1861, he became a member of the U. S. Sanitary 
Commission and immediately entered heartily into its work. 
On the first of September he resigned from the army and took 
the Secretaryship of the Western Department of the Sanitary 
Commission, having supervision of the work in the valley of the 
Mississippi, with headquarters first at Cleveland but afterwards 
at Louisville. By correspondence and visitation he “began 
the work of turning into oge great channel the thousand springs 
of philanthr “Opy and patr iotism that were bur sting out in ham- 
*In 1853 Jules Marcou had traversed the region on the 35th pare tllel as geolo- 
gist of one of the Pacific Railroad exploring expeditions, 
