141 



Days of 



the 

 mouth. 



North 

 lat. 



July 7 



14° 20 



West 

 long. 



47° 38 



13 51 



PHYSICAL OBSERVATIONS, 



49 43 



ly wind very brisk, sky slightly 

 dull ; sea very fine. 



Deluc's 



Hrs. Therm, hygrom. 



14 23-7° 64-5° (92- 4° Sauss.) 



18 226 620 



20 233 61 



0 244 585 



4 24 2 56 0 (88 3° Sauss.) 



8 238 572 

 11 23*6 610 

 Cyanometer, atO h 30', the sky being 



without vapours, 32*5°. 

 Dip of the magnetic needle, 56*30° ; 

 oscillations, 239 ; good observa- 

 tion (latitude 14° 15' and long. 

 48° 3'). 



Temperature of the ocean, 24*7° j 



temp, of the air, 23*6°. 

 Cyanometer only 17°, and yet the sky 



perfectly blue, without clouds or 



visible vapours : blue color of the 



ocean, 33 0 . 

 Fine breeze, sea beautiful, at 200 



leagues distance from French 



Guyana to the N.N.E. 



Deluc's 

 Therm, hygrom. 



Hrs. 

 20 



2 



4 



7 



12 



235° 

 230 

 230 

 228 

 22-3 



58o 

 57 



56'2 (88-3° Sauss.) 

 590 



62 2 (91-4° Sauss.) 



2 f 2 



