THERMOMETRICAL OBSERVATIONS, 255 



17th. Thermometer 73° at fun rife, rofe to 87'. 

 — Cloudy all day and night. 



Obferved zenith diftance of ^ Tauri . 2" 36' ^y s. 



1 8th. Thermometer 70° at fun rife, rofe to 81°. 



Obferved zenltli diftance of « Coio. Borealis 3" 37' 59". 5 s. 



Cloudy during the night. 

 19th. Thermometer 70'' at fun rife, rofe to 74°. 

 — Showery all the afternoon. 



Obferved zenith diftance of Tauri 2° 36' S^"-5 '• 



After this obfervation it was cloudy the re- 

 mainder of the day. 

 20th. Thermometer 71° at fun rife, rofe to 80°. 

 — The morning remarkably fine and clear, 

 wind from the eafl:, — at 9" A. M. it almoft 

 inftantly became cloudy from the fouth, and 

 between noon and i o'clock, a gull of rain 

 accompanied with large hail ftones from the 

 S. W. pafled about four miles to the north 

 of our camp. 



End of the obfervations made on the Cha- 

 tahocha. 



" ' " Daily loft. 



Cloct too flow mean time July 31ft. . o 5 22 " 



do. . . Aug. 2d. . o 5 46 ■ ■ '^ 



Longitude weft from Greenwich by the immerfion of the 3d fatellite of 

 If. on the 31ft of July j*" 37' 59". 



L 1 2 Refult 



