On the Chlorophyll Corpuscles of some 

 Infusoria. 



By 

 Jessie A, Sallitt* 



With Plates XIII and XIV. 



A FORM of chlorophyll corpuscle present in Spongilla and 

 Hydra viridis, which is peculiar to animals, has been recently 

 described in this Journal by Professor Lankester.i In con- 

 nection with this work, I have at his suggestion examined 

 several green forms of Infusoria, and I wish to thank him here 

 for the help he has most kindly given me. 



The animals I have examined are species of Paramecia, 

 Stentor, Vaginicola, Vorticella, Phacus and Euglena. 



The chlorophyll corpuscles in most of these are so much 

 alike, that a description of each would be in great part 

 repetition, so I describe fully only those of one, that is Para- 

 mecium bursaria. The figures given of the rest sufficiently 

 show their similarity to the typical form. 



In Paramecium bursaria and Stentor polymorphus 

 the corpuscles are large and clearly defined, and I have been 

 able to follow their mode of division. The corpuscles of the 

 remaining forms, from the few stages observed, evidently 

 divide in the same way. 



Paramecium bursaria. — The chlorophyll corpuscles are 

 very numerous, and are scattered through the endoplasra of 

 the animal. They are usually spherical. They vary in size 



* E. Ray Lankester, " Chlorophyll Corpuscles and Amyloid Deposits of 

 Spongilla and Hydra," ' Quarterly Journal of Microscopical Science,' 1882. 

 VOL. XXIV. NEW SER. M 



