90 J. W. JENKINSON. 



In the ))rotoplasmic body were (1) a hyaline, vacuolated 

 ground substance; (2) red granules of different sizes^ varying 

 in number, and not always present; (3) yellowish-green, round 

 or irregular granules closely resembling the chloroplastids of 

 certain Algse except in colour ; they were smaller but more 

 numerous than the red, which Archer supposed to be derived 

 from them ; (4) there were numerous small, pale blue homo- 

 geneous bodies, rounded in the resting stage, fusiform during 

 the streaming, capable of division, and of gliding on or in the 

 threads of the meshwork with a movement, according to Archer, 

 of their own; and (5) in the streaming condition there was a 

 " diffuse chlorophyll.'^ 



Reproduction was effected in two ways : (1) by the separa- 

 tion of the nodes of the meshwork ; and (2) by the division, 

 inside the cysts, of the protoplasmic body into several portions, 

 each of which became surrounded with a proper cyst of its own. 



h. Lankester (8) suggested that the spindles of Chlamy- 

 domyxa, as also those of Labyrinthula, were to be regarded as 

 nuclei. 



c. Geddes (6) described the resting stages. He did not 

 observe the streaming out of the protoplasm, although he re- 

 peatedly saw hernia-like protrusions of the contents of the 

 cyst, which re-encysted themselves outside the Sphagnum cell. 

 He also observed division of the contents of a cyst and the for- 

 mation of proper cell-walls round these, as well as the formation 

 of a septum between separate portions of a cyst. 



He describes, in addition, two other kinds of cysts, one of 

 which he calls the Protococcus form, and believes to have arisen 

 from separated portions of the labyrinthine meshwork ; the 

 other sort being due, he supposed, to individuals which had 

 migrated out of their cysts, spent some time as naked amoebse, 

 and then re-encysted. 



He mentions, without figures or further description, cell- 

 nuclei ; and, besides these, masses of " protoplasm,'^ usually of 

 a red colour, and occasionally nucleus-like bodies containing a 

 nucleolus, to be regarded as secondary cysts exceptionally 

 formed inside the primary ones. A yellowish pigment, pro- 



