328 



THE MICROSCOPE AND ITS REVELATIONS. 



tion of a new layer of cellulose within the old; for the indigestible 

 parts of various organisms, that must have been introduced in the man- 

 ner just described, are often distinguishable through the walls of com- 

 pletely closed-in specimens. Mr. Archer has been unable to detect a 

 ' nucleus/ either in the body of his Chlamidomyxis, or in any of its ex- 

 tensions; but 'contractile vacuoles/ executing pretty regular rhythmical 

 movements are to be seen, not only in the body and primary stem (in 

 which they are usually very numerous), but also in the branches , and not 



Chlamidomyxis labyrinthuloides /showing the protoplasmic mass extending itself from the 

 ruptured cellulose envelope, and forming a network whose threads are traversed by fusiform par- 

 ticles; a, a, isolated masses of protoplasm; b, a captured Navicula about to be drawn into the pro- 

 toplasmic mass. 



unfrequently in the ( islands ' also. Thus in its extended condition this 

 creature leads a life which is essentially Animal, corresponding in every 

 particular with that of the ' reticularian ' RMzopods hereafter to be de- 

 scribed (Chap. x.). Nothing is yet known of its Reproduction. Mr. 

 Archer has met with large individuals, the contents of whose many- 

 layered cellulose wall had divided itself into a number of smaller orange- 



