JOURNAL OF MICROSCOPICAL SCIENCE. 



EXPLANATION OF PLATE V, 



Illustrating Mr. Geddes' " Observations on the Resting 

 Stage of Chlamydomyxa labyrinthuloides, Archer.'* 



Magnified 200 to 350 diameters. 



Fig. 1. — Various stages of the development of Chlamydomyxa. a, Proto- 

 coccus form ; b, the same elongating ; c, a more advanced stage ; d and e, 

 these bursting through ; f, an adult form, from which a new outflow has 

 arisen. 



Fig. 2 a. — Protococcus forms ; 2 b, larger ditto. 



Fig. 3. — Large Protococctis form, remaining undivided. 



Fig. 4. — Another, divided into two equal and similar portions. 



Fig. 5 a and b. — Others divided into four. 



Fig. 6 a and b. — Cysts, within which two new equal and similar cysts 

 have formed. 



Fig. 7 a. — Cyst divided by a transverse partition into two approximately 

 equal halves ; b, another of the same, from one chamber of which the 

 contents have disappeared. 



Fig. 8. — Large adult Chlamydomyxa, from which anew outflow is taking 

 place. The adjacent smaller form may have arisen in the same way, and 

 become closed off. 



Fig. 9 a. — Case of outflow, where the new thin-walled portion is almost 

 of equal size to the parent mass ; b, case in which the two portions are only 

 connected by a thread of cellulose. 



Fig. 10. — Two masses of peculiar form, which appear just to be leaving 

 the amoeboid state, and developing new cellulose walls. Probably these 

 have wandered from cysts. 



Fig. 11 a, b. — Two cases in which the chlorophyll is not uniformly 

 diffused throughout the whole or great part of the protoplasm-granules, as 

 is generally the case, but is collected into definite patches at tolerably 

 regular distances. 



Fig. 12. — Case in which new cellulose wall has been formed at one side 

 within but free from the former wall, at a pause in the outflow. 



Fig. 13. — Example showing a morsel of protoplasm, separated at an 

 early period ; a subsequent outflow of the whole protoplasm, with deposi- 

 tion of new cell wall, followed by two diS'erent periods of shrinkage, as 

 demonstrated by the existence of two internal strata of cellulose ; the 

 older distinct near apex, the inner and younger still incipient, indicated by 

 a single line. 



Fig. 14. — Specimen containing six young cysts, all nearly equal and 

 similar. 



Fig. 15. — Another specimen, containing eight or nine young cysts, much 

 less equal and similar. 



