276 



University of California Publications. 



[Geology 



a short vertical one." The limits of the trade wind belt off the 

 California coast will be discussed later, but it is needless to re- 

 mark that these limits never reach as far north as Cape Blanco. 

 Mr. Buchanan, it should be noted, does not discuss the conditions 

 on the coast north of San Francisco. 



Possibly the most interesting instance of cold water rising 

 from ocean depths is found on the Somali Coast of Africa just 

 south of Cape Guardafui. Captain Hoffmann's account of the 

 voyage of the Mowe is becoming classic in these discussions. The 

 course of the Mowe was northward from Zanzibar along the coast 

 of Africa to the Gulf of Aden. The table of temperatures here- 

 with is taken directly from Captain Hoffmann's account, chang- 

 ing the temperatures to Fahrenheit to agree with the use in this 



OBSERVATIONS OF CAPTAIN HOFFMANN 

 FROM "REISE S. M. KR. MOWE VON ZANZIBAR NACH ADEN"* 



Latitude 



Longitude 



Date 



Hr. 



Temp. 

 Water 



Latitude 



Longitude 



Date 



Hr. 



Temperature 

 Water 







1886 

 June 28 



12 



79°2 



4° 41' N 



48° 14' E 



July 3 



12 



68?0 







" 28 



12 



75.2 







" 3 



4 



65.6 



4° 42' S 



39° 36' E 



" 29 



12 



77.7 







" 3 



8 



64.8 







" 29 



12 



77.0 



7 io ;n 



49 33 E 



» 4 



12 



69.8 



1 58 S 



41 25 E 



" 30 



12 



79.5 







" 4 



4 



68.4 







" 30 



12 



77.4 







" 4 



8 



64.2 



1 15 N 



43 15 E 



July 1 



12 



80.4 







» 4 



12 



66.6 







» 1 



12 



78.1 







» 4 



4 



66.9 



2 35 N 



46 24 E 



" 2 



12 



78.8 







» 4 



8 



66.2 







" 2 



12 



74.8 



9 30 N 



51 21 E 



" 5 



12 



68.0 



4 41 N 



48 14 E 



" 3 



12 



77.4 







" 5 



12 



73.9 







" 3 



4 



71.2 







» 5 



8 



6. Guardafui 







" 3 



8 



68.0 



11 56 N 



51 05 E 



" 6 



12 



90.3 



*Ann. der Hydrogr., 1888. p. 345. 



