Mctrcet. 



Proc. Roy. Soo. Vol.44-.Pl.14-. 



Front Elevations. 



EncbElev' 



A B&LL for contoucning Hydrogens. 



B. EvuCbuometer. 



C. (fyVunxLer, fuXL of Mercury. 



D. Rajck, kpiruum/ for rousing St lowering 

 EyudjuOTweter. 



E. Stop codo Letting excuses -unto 6c through 

 the. Eiodzometer iru 4 cU/Ferent ways. 



