PLATE CXX. 



FlO. 339. Hot air bath for ilryiug precipi- 

 tates, &c. 



FIG. 340. Bell-jar and dish, containing sulphuric acid 

 for drying and cooling substances. 



FIG. 342. Platinum triangle stretched 

 upon a larger iron one for ignition. 



FIG. 343. Specific gravity bottle. 



FIG. 344. Specific gravity bottle. 



FIG. 345. Bottle for taking the spe- 

 cific gravity of small quantities of 

 liquids. 



FIG. 342. 



FIG. 343. 



FIG. 345- 



