140 



Days of 



the 

 month. 



July 4 



North 

 lat. 



16° 19' 



15 18 



14 57 



14 20 



West 

 long. 



39° 19 



42 21 



44 40 



PHYSICAL OBSERVATIONS. 



Thermometer, the whole day, between 

 22° and 236° ; hygrometer be- 

 tween 87° and 89*6°, Saussure's 

 division. 



Sea, 23 0° • air, 22*2°. 

 Variations of the meteorological in- 

 struments : 



Hours. 

 At 23 



Centigrade 

 therm. 

 21 9° 



Deluc's 

 hygrom. 

 61 2° 



0 



232 



61-5 



2 



234 



600 



3 



234 



61 2 



6 



23' I 



630 



12 



23 3 



634 



Dull and cloudy weather. 



Temperature of the ocean, 



temp, of the air, 22 8°. 



Deluc's 



Hrs. Therm. hygrom. 

 15 22 6° 68 5°. 



23 7' 



18 

 20 

 22 

 0 

 7 

 12 



22 7 

 233 

 231 

 235 

 236 

 235 



665 

 65*5 



Dull and 



66*4 cloudy 



650 

 65-2 

 66 0 



weather. 



Saussure's hygrometer would have 

 remained between 92 8° and 

 944°. 



47 38 In the midst of the ocean between 

 Africa and South America, easter- 



