ajid on Astronomical Refractions. 



569 



Hence by the table p' = 25*686, p = 6*627 reckoned in lbs. 

 per square inch. 



p' = 1-7466, p = -4506, ;/' +/= "3060 in atmospheres, 

 log 1-7466 = -2422019, log -4506 = 9-6538224 



-2422019 X -0134 = -00324550546 



9-9967545 

 logE = 0-0704184 



0-0671729 = log 1-16727 



0-3461776 X -0134 = -00463877984 

 •0704184 



-0750571 = lo"; 1-18865 



log -18865 = 9-2756568 

 W -16727 = 9-2234181 



logp 



= 9-6538224 

 = 1-0991971 

 = 1-0211893 



log 

 log 

 log 



0- 



P' 

 a 

 c 



0522387 

 = 0-2422019 

 = 1-0991971 



= 9-6989700 



1-0403690 



10-974 

 38-451 



iog(p"+f) 

 log a 

 log I 



= 1-9769641 

 = 1-1674946 

 = 2-1583625 



= 9- 

 = 1- 

 = 1-' 



1- 



4857179 

 0991971 

 OOOOOOO 



1-7742088 

 59-457 



5849150 

 38-451 





49-425 





46411966 

 logl= 1-0000000 

 logS = 9-9671554 



8-7179923 



log 94-834 

 log 14-706 

 log 144 



log I {I + 1) 



ar 





4-3263443 

 log V = 2-3979400 



5-3028212 

 = 1-0569049 





1-9284043 



84-802 

 59-457 



4-2459163 

 = 17616 





144-259 

 49-425 





94-834 

 ar = 17616 expressed in lbs., M. de Pamboiir finds a r ~ 17337. 



[To be continued.] 

 Phil. Mag. S. 3. Vol. 16. No. 106. S2q:)pl. July 1840. 2 Q 



