66 ENDOSMOSE. LECT. III. 



the fowl, the elevation of the liquid was also the same, when 

 we prolonged the experiment several hours. When, in 

 some rare cases, we remarked a slight difference, at most 

 of 1 or 2 millimetres, it was always in that endosmometer 

 in which the inner surface of the membrane was in contact 

 with the solution of gum. 



To complete our account of the results obtained by the 

 employment of the membranes in this second class, it only 

 remains for us to add the phenomena observed when we 

 employed alcohol for the inner liquid, putting it succes- 

 sively in contact with each of the surfaces of these mem- 

 branes. With the stomachs of the lamb, the cat, and the 

 dog, endosmose was invariably directed from the water to 

 alcohol, and was promoted from the internal to the external 

 surface of the membrane. Indeed, we have seen in the en- 

 dosmometer where the external surface of the mucous mem- 

 brane of the stomach of the lamb was turned towards the 

 interior of the instrument which contained alcohol, the ele- 

 vation attained 88 millimetres, and only 10 millimetres in 

 the contrary position ; afterwards the liquid in the first en- 

 dosmometer rose 40 other millimetres, and remained sta- 

 tionary, and sometimes even fell in the second instrument. 



With the stomach of the cat, alcohol rose 22 millimetres 

 in the tube in two hours, when the external surface of the 

 membrane was turned towards the interior of the endosmo- 

 meter, but with a contrary arrangement it did not rise more 

 than 2 millimetres. Sometimes even when, in the first 

 position of the membrane, the elevation was from 20 to 24 

 millimetres, in the second, there was no elevation. 



With the stomach of the dog, the elevation of alcohol in 

 the tube, was 24 millimetres when the mucous surface was 

 in contact with water, but was only 16 millimetres when 

 placed in the reverse position. Six hours after, the liquid 

 rose again 40 other millimetres in the first case, and 25 



