resides, any motion was communicated to the particles ef such color- 
ing matter by the supposed papille, or by the active molecules within 
the terminal cells. A circulation of the fluids within the shell was ob- 
served, independent of the vague movements of the active molecules ; 
this was regular, passing in two opposite currents, one along the side of 
the shell, and the other along the. periphery of the gelatinous body. 
When the shell and body of the Closterium was broken by p 
the green gelatinous matter was forcibly ejected by the contraction of 
the membranous envelo 
“The action of iodine “apeid the specimens was very remarkable ; 
Ist, it did not, as reported by Meyen, stain the green body violet or 
purple, but orange-brown ; 2d, it produced violent contraction of the 
investing membrane of the body, whereby the green matter was often 
forcibly expelled from the shell at the transverse division; it instantly 
annihilated the motion of the molecules in the terminal sacs, and the 
sacs themselves became so distended with fluid as to burst and allow 
the molecules to escape. 
ip itn oR 2 stad Salah place, Ist, by spon- 
ne eatin cemetone! 
“The author, after balancing the arguments of the two theories re- 
resembling that of plants, it has also a definite organ, unknown i in the 
vegetable world, in which the active molecules appear to enjoy an in- 
ent motion, and the parietes of which appear capable of con- 
tracting upon its contents. 
“2d. That the green gelatinous body is contained in a membranous 
envelope, which, while it is elastic, contracts also upon the action of 
ile the appearance of a viteliine soakam, transparent but molecular 
a chorion or shell, determines them as animal ova. It was shown 
to be impossible that these eggs had been deposited in the empty shell 
‘ infusoria, or that they were the produce of some entozoon. 
S Ath, That while it was impossible to determine whether the vague 
motions of Closterium were voluntary or not, yet the idea the author 
had formed of a suctorial apparatus, forbade his classing them with plants. 
2 Lastly, i in no instance had the action of iodine produced its ordi- 
: Sh ahagh upon starch or ve table matter, by coloring it violet or 
Me, Meyen asserts it did in his trials. 
