Cuar. III] THE PROCESS OF AGGREGATION. 55 
of the cells aggregated themselves into broken rings, still of a red 
colour, which very slowly and slightly changed their shapes, and the 
central spaces within these rings became cloudy with red granular 
matter. The facts here given (whether they are new, I know not) 
indicate that interesting results would perhaps be gained by observing 
the action of various saline solutions and other fluids on the roots of 
plants.* 
* [See C. Darwin on “The Action also “The Action of Carbonate of 
of Carbonate of Ammonia on the Ammonia on Chlorophyll-bodies:” 
Roots of certain Plants: ” ‘Linn. Soc. ‘Linn. Soc. Journal’ (Bot.), vol. xix. 
Journal’ (Bot.), vol. xix. 1882, p. 239; 1882, p. 262.—F. D.] 
