HISTORY OF CALIFORNIA. 141 



Lawson, U. S. Army, with thermometrical observa- 

 tions, taken at the following places in California, 

 viz : At San Francisco, by Assistant-Surgeon W. C. 

 Parker, for six months, embracing the last quarter of 

 1847 and the first quarter of 1848. The monthly 

 mean temperature was as follows : October, 57°; 

 November, 49°; December, 50°; January, 49°; 

 February, 50°; March, 51°. 



" At Monterey, in latitude 36° 38' north and longi- 

 tude 121° west, on the coast, about one degree and a 

 half south of San Francisco, by Assistant-Surgeon 

 W. S. King, for seven months, from May to Novem- 

 ber inclusive. The monthly mean temperature was : 

 May, 56°; June, 59°; July, 62°; August, 59°; Sep- 

 tember, 58°; October, 60°; November, 56°. 



" At Los Angeles, latitude 34° 7', longitude west 

 118° 7', by Assistant-Surgeon John S. Griffin, for 

 ten months, from June, 1847, to March, 1848, inclu- 

 sive. The monthly mean temperature was : June, 

 73°; July, 74°; August, 75°; September, 75°; 

 October, 69°; November, 59°; December, 60°; 

 January, 58°; February, 55°; March, 58°. This 

 place is about forty miles from the coast. 



"At San Diego, latitude 32° 45', longitude west 

 117° 11', by Assistant-Surgeon J. D. Summers, for 

 the following three months of 1849, viz : July, 

 monthly mean temperature, 73°; August 75°; Sep- 

 tember, 70°. 



" At Suttersville, on the Sacramento River, latitude 

 38° 32' north, longitude west 121° 34', by Assistant- 

 Surgeon R. Murray, for the following months of 1849 : 

 July, monthly mean temperature, 73°; August, 70°; 

 September, 65°; October, 65°. 



" These observations show a remarkably high tempe- 



