Geological Obfervatlons 383 



39>5-H5~ 8 4>5 and ^ = 42,25, which is 



2 



therefore the mean temperature of the atmof- 

 phere ; the difference between this and 31*24 

 =: 11,01 d. 



The fraction ,00243 * s now to ^ 

 plied into 4016,664, the produdt is 9,7604 

 which multiplied into d 107,462, and as the 

 mean temperature is above 31524. pd is to 

 be added to the approximate height then 

 4016,66 + 107,4611:4124,12 feet, the true 

 corrected height. 



Some of the moft remarkable mountains, 

 whofe heights have been taken with tolerable 

 accuracy are, 



IN AMERICA. 



Englifli feet above the level of the fea. 

 Chimbora^o - 20575,8 or 3, 89 miles. 



El Cora9on - n 15783 



The town of Quito - 9243 



IN AFRICA. 



Teneriffe - - 11022 De Borda 1 3 Raz. 



Pico Ruivo in Madeira - - - 5141 PblL tranf. 1765. 



IN 



