143 



Days of 



the 

 month. 



North 

 lat. 



West 

 long. 



PHYSICAL OBSERVATIONS. 



July 12 



10° 40/ 



60o 54' 



A smart breeze, particularly during 

 the night ; wind east, pretty 

 strong j sea rough j very fine sky, 

 not free from vapors. 



Temperature of the ocean, 25*8°; 

 temp, of the air, 25 3°. 



Cyanometer, 14'4°. 



Saussure's hygrometer, the whole day, 

 from 89-5° to 90°. 



Dip of the magnetic needle, 46*95° ; 

 oscillations, 229 (good observa- 

 tion) . 



13 



11 16 



62 45 



Cloudy, with squalls $ very strong 

 east wind ; very high sea ; a little 

 rain : distance one league east- 

 south-east of the north cape of the 

 island of Tobago. 



Temperature of the ocean, 25*8°; 

 temp, of the air, 25' 1°. 



Hygrometer, from 90° to 91/8° (Saus- 

 sure's division). 



14 



11 1 



64 51 



Temperature of the ocean, 25*6° 5 

 but on the shoal, which extends 

 from the island of Tobago to that 

 of Grenada, 23 1° ; temp, of the 

 air, 25°. 



Saussure's hygrometer, 91' 5° to 92'7°. 



Dip of the magnetic needle, 47 '5° 5 

 oscillations, 237 ; good observa- 

 tion. The mountainous coast of 

 Paria seen at 4 leagues distance : 

 slight breeze 5 fine and serene 

 weather. 



