ITINEEARY OF THE REGION". 



15 



The average dates of killing frosts are as follows: Last in spring, 

 March 29 at Eureka, April 14 at Ukiah, and May 10 at Crescent City; 

 first in autumn, November 1 at Ukiah, November 7 at Crescent City, 

 and November 29 at Eureka. 



Precipitation. — The total annual rainfall is invariably heavier in this 

 portion of the State than in any other. Even in the drought years of 

 1897 and 1898 the annual rainfall exceeded 50 inches at Crescent City 

 and 40 inches over almost the whole of Humboldt Comity. In 1899 

 the maximum was 86.55 inches at Crescent City. The following table, 

 based upon the Government reports, shows the precipitation that may 

 be expected each month : 



Normal monthly precipitation. 



Month. 



January . 

 February 

 March ... 



April 



May 



June 



July 



Ukiah. 



Eureka. 



7.82 



7.48 



5.28 



6.47 



4.93 



6.57 



3.21 



4.28 



.92 



2.99 



.22 



1.23 



.05 



.10 



Month. 



August 



September _ . 



October 



November .. 

 December . . . 



Annual 



Ukiah. Eureka. 



0.01 

 .60 



1.48 

 3.61 

 6.84 



0.16 

 1.25 

 2.61 

 5.33 

 7.66 



34. 97 



46.13 



The snowfall on the coast is usually small, 1.5 inches being reported 

 for Upper Mattole and only a trace at Crescent City in 1898, 4 inches 

 at the latter place in 1899, and none at Eureka. In 1898 Ukiah had 

 3 inches of snow, but in 1899 none. However, snow is reported to fall 

 almost every winter on the upland ranges near Ukiah and on the 

 plateau. 



Prevailing winds. — During these three years the prevailing winds 

 over the whole region are reported as from the northwest. 



ITINERARY. 



The forage conditions of this region were made the subject of an 

 investigation by the writer, with the assistance of Mr. Walter C. 

 Blasdale, in the summers of 1899 and 1900. 



Three trips were made, of which the routes traversed are shown on 

 Map III. The first trip occupied from May 23 to July 3, 1899, and 

 embraced the interior plateau section. The stage road was followed 

 from Ukiah to Eureka, a distance of about 183 miles, passing through 

 Willits, Sherwood, Laytonville, Cummings, Harris, and Scotia. From 

 Eureka the two mountain ridges were crossed to Hupa Valley, on the 

 Trinity River, about 50 miles distant. From Hupa a side trip was 

 taken to the summit of the Trinitj 7 Mountains at Trinity Summit, 

 about 7,000 feet altitude. From Hupa Valley the descent of the 

 Klamath River from Martins Ferry to Requa on the coast, a distance 

 of 55 miles, was made by Indian canoe. From Requa the stage road 

 was followed to Crescent City and Smith River, the return trip to San 

 Francisco being made by steamer. 



