Publications of the United States Government. 27 



Report of General Riley, dated January 1, 1850. pp. 118- 



119. 

 Report of Lieutenant Ord to General Riley, dated October 



31, 1849. pp. 119-127. 



Part 2. Report of the Secretary of War in further compliance 

 with the resolution of the Senate, calling for copies of 

 Report on the Geology and Topography of California. 

 Washington, 1850. 37 pp., and 3 maps. (31st Cong., 

 1st sess., Senate Ex. Doc. 47.) 



This report contains : A topographical memoir accompanying 

 maps of the Sacramento Valley, etc.; by Lieut. G. H. Derby, pp. 2-16. 



Reconnoissance made by Capt. "SV. H. Warner of a route through 

 the Sierra Nevada by the upper Sacramento, pp. 16-34. 



Exploration of Monte Diablo, and the valley lying between this 

 mountain and the southern shore of Suisun Bay; by Lieut. R. S. 

 Williamson, pp. 34-37. 



Geology and industrial resources of California; by Philip T. 

 Tyson. Baltimore, 1851. xxxiv, 127, and 37 pp. 9 

 sections and three maps. 



A republication of the above report, with an introduction and an 

 index. 



The Report of Secretary of War. 1850. (31st Cong., 2d sess.. 

 Senate Ex. Doc. 1.) 



The report of Major D. H. Vinton contains an account of borings 

 near Benicia. pp. 278-279. 



T. Butler King's report on California. 1850. (31st Cong., 

 1st sess.. Ho. of Rep. Ex. Doc. 59.) 



This document was published in Washington in another form by 

 Gideon & Co., 1850. 72 pp. 8vo. 

 The author gives an account of the geology of the Gold Regions. 



Letter from Col. Richard B. Mason. (31st Cong., 1st sess.. Ho. 

 of Rep. Doc. 17, 1850, pp. 528-536.) 



This letter is the first official report on the discovery of gold in 

 California. Colonel Mason states that on the 12th of June, 1848, in 

 company with Lieut. W. T. Sherman, he started on a tour through 

 the northern part of California to visit the newly discovered gold 

 placer region in the valley of the Sacramento. He gives a description 

 of the country along the American River and an historical account 

 of the mining regions. He also gives a description of the quicksilver 

 mines near San Jos6. 



