ON THREE BALLOON ASCENTS IN 1865 AND 1866. 393 



Table VI. {conthmcd). 



HciRht, 

 in feet, 

 above the 

 level of 

 the sea. 



feet. 



44CO 



4300 



4200 



4100 



4000 



3900 



3800 



3700 



3600 



3500 



3400 



3300 



32CO 



3100 



3000 



2900 



28C0 



2700 



2600 



2500 



2400 



2300 



2200 



2100 



20C0 



igoo 



1800 



1700 



1600 



1500 



1400 



1300 



1200 



1 1 00 



1000 



900 



800 



700 



600 



500 



400 



300 



200 



100 



o 



T(j 



Oct. 2, 1863. Dec. 2, 13G5. 



May 29, 1866. 



State of the Sky. 



Clear. 



feet. 



4500 

 4400 

 4300 

 4200 

 4100 

 4000 

 3900 

 3800 

 3700 

 3600 

 3500 

 3400 

 3300 

 3200 

 3100 

 3000 

 2900 

 28CO 

 2700 

 2600 

 2500 

 2400 

 2300 

 2200 

 2100 

 2000 

 1900 

 1800 

 1700 

 1600 

 1500 

 1400 

 1300 

 1200 

 iioo 

 1000 

 900 

 800 

 700 

 600 

 500 

 400 

 300 

 200 

 100 



Cloiulv. 



Partially clear and cloudy. 



The sign — denotes an increasing temperature with increase of elevation. 



