CHEMICAL APPARATUS AND PRODUCTS. 211 



A. Eudiometer. 

 B B. Barometer. 



C. Tube supplying mercury to 

 barometer and eudio- 

 meter. 



E. Water cylinder. 



L. Mercury reservoir. 



K. Flexible tube connecting 

 reservoir to C. 



O. Screen to place behind tubes 

 when reading length of, 

 columns. 



Me Leod's Apparatus. 

 P 2 



