On Animal Chlorophyll. 
animal which assimilates by means of its own chlorophyll. 
Years ago the author believes that he has met with speci- 
mens of Cothurnia crystallina of a diffused green colour. It 
may also be asked whether the blue, brown, violet, and 
other pigments found in a diffused state in the eftoplasm of 
vanous Infusoria are not genuine chromophylls, comparable 
with the xanthophyll, cyanophyll, rhodophyll, &c., of the 
Algae ? Here is a wide field for research, and especially for 
the application of the Badteria- method. 
Is it not possible that in certain cases portions of animal 
plasma may have become differentiated “ pseudo-Algae,” — 
chromophyll-granules ? Is it not judicious to pause before 
pronouncing every coloured corpuscle, occurring in an ani- 
mal, resembling a small Alga and evolving oxygen in the 
light, to be a guest or inmate of vegetable origin ? 
