The Colour of the Sea 131 



even at fifteen miles from this coast some green water was 

 met with having a temperature of 18-8 C. I attributed 

 to this the foggy state of the atmosphere which prevailed. 

 This obscured the sun, and retarded both the heating and 

 the bleaching of the water. In lat. 14 8' S., when six miles 

 off shore, the water was quite green, and its temperature 

 15-1 C. Outside of Callao, lat. 12 o' S., the water was green, 

 its temperature 16-3 C. ; in the harbour its temperature 

 v C., and its colour a dirty green, turbid and milky 

 with sulphur, smelling strongly of sulphuretted hydrogen, and 

 full of dead fish. Continuing northwards, off Ferrol Islands, 



) n' S., the temperature of the water was 16-0 C., and 

 >lour olive-green. At Payta, lat. 5 5' S., the temperature 



of the water was 17-1 C., and its colour a chalky green. 



green and cold shore water ceased abruptly at Cape 



Blanco, lat. 4 27' S., and during the passage round this cape 



from Payta to the entrance of the Guayaquil River, lat. 3 9' S., 



the temperature of the water rose from 17-1 to 25-2 C. From 



locality a pretty straight line was followed across the 



i tonal current near its source to Panama, lat. 9 o' N. 



During the passage the temperature of the water varied between 



25 and 27 C., and it maintained a blue colour throughout. 



At Panama, however, with a temperature of 27 C., the water 



juite green. 



A similar occurrence of cold and green water near the 

 shore was observed on the North American coast from ( 

 San Lucas, at the extremity of the Californian peninsula. 

 to ^ ncisco. In the equatorial waters which wash 



oast from Cape Blanco, lat. 4 27' S., to Panama, an.l 

 e to Cape Corrientes, lat. 20 25' N., long. 105 43' W., 



green revalent along the shore, but its tempera- 



lijh, 28 or 29 C. 



1 here refer to only one other localitv. .m.l th.it a w-ll 

 MI MM.-, where the w< iore of an ocean is associated 



with green water of abnormally low t mperature, namely, 

 roast of North America from Florida to Nova Sc 



!ii h is found on this coast and 

 Ige of the Gulf Str< 

 92 



