100 



Junoniae, Nivaria, Ombrios, Canada, and the 

 Capraria of the ancients *. 



The haziness of the horizon prevented us, dur- 

 ing the whole of our passage from Lanzerota to 

 TenerifFe from discovering the summit of the peak 

 of Teyde. If the height of this volcano is 1905 

 toises, as the last trigonometrical measure of 

 Borda indicates, it's summit ought to be visible 

 at a distance of 43 leagues, supposing the eye on 

 a level with the ocean, and a refraction equal to 

 0-079. of distance. It has been doubted -J~ whe- 

 ther the peak has ever been seen from the chan- 

 nel, which separates Lanzerota from Fortayen- 

 tura, and which is distant from the volcano, 

 according to the chart of Varela, 2° 29', or near- 

 ly 50 leagues. This phenomenon appears never- 

 theless to have been verified by several officers 

 of the Spanish royal marine. I had in my hand, 

 on board the Pizarro, a journal, in which it was 

 noted, that the peak of TenerifFe had been seen 

 at 135 miles distance, near the southern cape of 

 Lanzerota, called Pichiguera. It's summit was 

 discovered under an angle considerable enough 

 to lead the observer, Don Manuel Baruti, to 

 think that the volcano might have been visible 



* Gosselin, Rech. sur la G6og. des Anciens, t. i, p. 146, 

 166, 163. 



f Voyage de la Flore, t. i, p. 380. My chronometer gave 

 me, on the coast north-west of Lanzerota, 15° 52' 10 ;/ west 

 of the meridian of Paris. 



