CONTENTS. 



PAQ1 



On the phenomena accompanying the mixture of two liquids separated by a mem- 

 brane 9 



Relation of porous bodies to water and other liquids 9 



The moistening of porous bodies depends on capillary attraction 10 



Pressure required to cause liquids to pass through membranes 11 



The pressure varies with different liquids 11 



The absorbent power of the membrane has a share in the effect 11 



Action of brine, oil, alcohol, &c., on moist membranes 12 



Cause of the shrivelling of membranes when strewed with salt 13 



Animal tissues are permeable to all liquids 14 



Saline solutions, alcohol, &c., mix with water through membranes 15 



Change of volume when two dissimilar liquids mix through a membrane ; Endosmosis 15 



This change of volume does not depend alone on the different densities 15 



Phenomena of the mixture of two liquids through a membrane 16 



The mixture is the result of chemical attraction 18 



Chemical attraction is every where active 19 



Examples. Crystallization 19 



Action of solids on dissolved matters 19 



Lawa of the mixture of two dissimilar liquids 21 



Effect of the interposition of a membrane 22 



The change of volume in two liquids which mix through a membrane is the result 



of chemical affinity modifying capillary attraction 23 



Effect of evaporation on liquids confined by membranes 24 



Views of MAGNUS on Endosmosis 24 



Remarks on his theory 24 



The nature of the membrane has an important influence 25 



Unequal attraction of membranes for different liquids 2 



The action of two liquids, separated by a membrane, is equivalent to pressure, un- 

 equal on opposite sides 27 



Causes which influence the mixture of two liquids separated by a membrane 29 



These causes produce, in the animal body, absorption of the fluids of the intestines 



into the blood 30 



Effects of drinking water and saline solutions of different strengths 30 



Influence of the cutaneous evaporation on the motion of the animal juices 31 



(7) 



