1868.] 



on Aneroid Barometers* 



475 



down readings; and by supposing each aneroid right to start with (sa}^ 

 right at 29 inches), that is to say, by correcting each instrument for index 

 error. We thus obtain : — 





tn 



CO 



_g 

 0\ 



00 

 + 



+ 



CO 



+ 



+ 



o 



4- 



+ 



vr> 



+ 



CO 



4- 













<D 



.2 







+ 



oo 



+ 



-f 



+ 



+ 





+ 



vo 



4- 













•A 

 o 



'o 



.2 



6) 



+ 



CO 



+ 



ON 



4- 



o\ 



o 



+ 



+ 



00 



o 



+ 



+ 



00 



4- 











.2 



ON 



CO 

 0) 



'o 



•2 





o 

 + 



+ 



O 

 + 





<-ri 

 O 



+ 



+ 



+ 











sd right at 



2 

 'o 



.2 



r» 



o 

 + 



O 

 + 



+ 



o 



+ 





o 



00 



o 



+ 



4- 



oo 

 o 



+ 



+ 



vo 



4- 



00 

 CO 



4- 



[., suppose 



'o 



N 



O 

 + 



O 



o 



ON 



o 



+ 



o 



+ 



O 

 + 



o 



+ 



o 



+ 



o 



+ 



4- 



vo 



o 

 4- 



CO 



4- 



oo 



4- 



of Table ] 



m 

 o 



'o 



.2 



vn 



+ 



p 

 'l 



ON 

 + 



p 

 + 



On 

 O 



4- 



o 



+ 



On 



O 



4- 



On 



-P 



4- 



ON 



o 



4- 



p 

 *| 



O 



4- 



co 



+ 



Aneroids 



CO 



'o 



VO 



o 



o 



o 



+ 





+ 



o 



+ 



p5 



O 



1 



O 

 + 



O 

 + 



On 



o 



+ 



CO 



O 

 1 



VO 

 O 



-f- 



00 



4- 



own readings of the 



.2 



o 

 o 



o 



o 



o 



+ 



O 

 + 



ro 



O 



+ 



pJ 



o 



1 



o 

 4- 



oo 

 O 



4- 



o 

 + 



O 

 1 



rl 



O 



+ 



4- 



1 



03 

 © 



.2 



00 



O 

 1 



o 

 o 



o 



+ 



O 

 + 



o 

 o 



o 



1 



o 



o 



ro 



O 



+ 



p) 



o 



+ 



t 

 1 



c» 



O 



+ 



o 



+ 



for the D 



J 



0\ 

 N 



8 



o 



8 



8 



8 



8 



8 



O 



8 



8 



o 

 p 



o 

 p 



Correction 



o 



o 



p 



oo 



VO 



oo 



© 



\o 

 oo 



^ 

 'a 



OO 



>^ 



1-3 



OO 



o 



vo 

 oo 



oo 

 Hs 



vo 

 OO 



vo 

 00 



© 



oo 

 1:3 



vo 

 oo 



© 



3 



1-2 



vo 



oo 

 © 





o 





© 



.2 



!s 



P! 



•4-3 



M 



© 

 o 



.2 



M 



© 

 o 



.2 



CO 

 © 



'o 



.2 



m 

 © 



.2 



M 

 © 



O 



.2 



© 



.2 



m 

 © 



m 

 © 



o 



.2 





. o 



e3 



00 



ON 



od 



o\ 



d 







to 



4- 





vo' 





