133 



Days of 



the 

 month. 



June 9 



North 

 lat. 



39 10, 



10 



37 26 



36 4 



West 

 long. 



16 0 18' 



16 32 



17 5 



PHYSICAL OBSERVATIONS. 



Dip of the magnetic needle (latitude 

 38° 52 ; and longitude 16° 22') 

 75 76°. 



Magnetic intensity, 242 oscillations j 



good observation. 

 The current, which sets E. by S. 



and S.E., begins to be felt. 



Light north-west wind, fine weather, 

 almost in the parallel of Cape St. 

 Vincent, and between this cape 

 and the Azores at eighty leagues 

 to the west of the cape. 



Temperature of the ocean, 15*2 0 ; 

 temp, of the air, 15° ; thermome- 

 ter exposed to the Sun, 187 0 : 

 Sun's force, 3'7°. 



Hygrometer at noon, 47° Deluc (83 5° 

 Saussure) . At three in the after- 

 noon, 50 o Deluc. (85*2° Sauss.) 



Dip of the magnetic needle, 75*35° 5 

 oscillations 242. 



Cyanometer, 14 Q ; blue color of the 

 sea, nearly calm, 44°. 



Temperature of the sea, 15-2° j temp, 

 of the air, 18*6° ; weather a little 

 cloudy. At seven in the evening, 

 temp, of the sea, still 15-2° 5 

 temp, of the air, 17'4 ; sea some- 

 what ruffled. 



Hygrometer, at seven in the evening, 

 51° Deluc (84*4° Saussure) . 



