ON BICOLLOIDS AND CELL MASSES. 



21 



alone, and the swelling even in the greatest attenuation of the acid 

 was much less than in water. The limiting effect of the calcium 

 chloride was also very marked. 



TABLE IV. 



Hydration of Mixtures of Agar 3 Parts, Gelatine 2 Parts at 14° C. 

 Plates 0.18 mm. in thickness; swelling of sections given in thickness and 

 in volume. 



Th. 



Vol 



Th. 



Vol. 



Vol. 



Th. 



HCl 550 



KCl I, goo 



CaCl: 920 



Water 



600 



2,015 



960 



930 

 2,270 

 1,220 



1,025 

 2.530 

 1.345 



1.430 

 2,440 

 2,030 

 2,200 



I..S7S 

 2,640 

 2,268 

 2.330 



TABLE V. 



Hydration of Mixtures of Gelatine 3 Parts, Agar 2 Parts at 14° C. 

 Plates 0.18 to 0.19 mm. in thickness; swellings given in thickness and in 

 volume. 



o.oi M. 



Th. 



Vol. 



Th. 



M. 



Th. 



Vol, 



HCl. . 

 KCl. . 

 CaCh 

 Water 



1,200 

 800 

 710 



1.320 

 880 

 740 



650 

 900 

 870 



690 



1,010 



940 



860 

 1,620 

 1.300 

 1.275 



920 

 1.850 

 1.430 

 1,420 



The gelatine-agar mixture being a dominantly albuminous mix- 

 ture, swelling in acid increased with the concentration which was 

 carried to a PH value of 2.01. On the other hand potassium chlo- 

 ride exerted an effect parallel to that shown by its action on agar, 

 the greatest swelling taking place at the lowest concentration with a 

 PH value of 5.7, the increase being much greater than in the acid 

 at the higher concentration. 



In general the living cell masses taken from growing organs are 

 dominantly pentosan, but some material has been examined in which 

 the hydration reaction is that of a dominantly albuminous biocol- 

 loid. No conception of living matter in plants not including some 

 of the all-pervading common salts is possible, and any attempt to 

 make a complete picture of the colloidal material of the cell must 



