ABSORPTION OF WATER AND MINERALS. 



in the liquid levels. Form a clear mental picture of the molecular 

 processes involved and of the energy concerned, and express in a 

 diagram. 



(Pour in the molasses tlirough a small funnel not allowed to drip 

 against the inside of the burette. If the liquid threatens to overflow, 

 add other burettes or tubes witJi rubber connections.} 

 For this experiment burettes specially made, 16 mm. external diame- 

 ter, graduated to 50 cc., with 2 cm. of tube above and below the gradua- 



FlG. IO. OSMOMETERS. 



One-fourth the true size. 



FIG. n. SIMPLE OSMOMETERS, 

 One-fourth the true size. 



tion, are best ; they are not expensive, and they may be used for several' 

 other purposes. Or, the bottom may be removed from one of the ordi- 

 nary kind. The diffusion-shell (made by Schieicher and Schuell, and 

 supplied at low cost by Eimer & Amend of New York) is very efficient 

 and convenient. But other membranes (such as pig's bladder, book- 

 binder's parchment, or even parchment paper, obtainable at all chemical 



