THE 



AMERICAN 



JOURNAL OF SCIENCE, &c. 



Art. I. — Miscellaneous Contributes, descriptive of appa- 

 ratus and inventions / by R. Hare, M. D. &c. &c. &c. 



APPARATUS FOR REGULATING OR PROMOTING 

 ABSORPTION. 



1 . Vases tightened by screws, substituted for Woulfe^s bottles. 



In the apparatus represented in the preceding figure, the 

 vessels, containing the liquid to be impregnated, are, by the 

 pressure of screws, made tight against leaden plates, which 

 they are ground to fit, and which are cemented and nailed to 

 the wooden cross-piece under which the vessels are situated. 



Vol. XIIL— No. 1. 1 



