AZOLlLA and SALVlNIA. 



569 



2,a. Nucleus (or mass of young secondary capsules) 

 of the same. 



PI. CXXV. f. III.,2&,c,a> Represent the first developments of 

 these secondary capsules. 

 „ f. I.&a, 36. Continuation of the developments, 

 ending in the presence of a larger cavity 

 filled with grume in the secondary capsule. 

 PL CXXVI. f. IL, 1. Long section of a capsule more advanced. 



„ f. II.,5. One of its secondary capsules at that stage 

 when the eavity is occupied by uniform grume, 

 PI. CXXVI. f. II.,2a Another intended to exhibit the next step 

 i. e. the appearance of points of condensa- 

 tion (or nuclei.) 

 „ f. II.,2&. Another more advanced : the parts of the 

 circumference of the grume between the 

 radiating lines, have a tendency, (shewn by 

 iodine,) to the production of membrane 

 (parent-cells ?) 



„ f. III. ,2a. Represents a young secondary, with its 

 cavity only partly filled with grume, in 

 which two condensed points (nuclei) are 

 visible. 



„ f. lll.,3a. Another about the same period, a considerable 

 number of membranous sacs (parent cells ?) 

 visible in the grume. 



„ f. HI.,3. Another about the same period. 



„ f. III.j36. Ditto more advanced, the membranes, 

 (parent cells ?) more developed. 



„ f. III.,4. Another still more advanced ; at this stage 

 the cavity is filled partly or entirely with 

 grume, in which are imbedded a number of 

 distinct trifacial cells, the young spores. 



( The development of tlie sac-containing secondary capsules.) 



PI CXXVI. f. I.,l. Capsule. 



PI. CXXVI. f. I.,3 a One of its secondary capsules, the cell in the 

 centre of the grume is the young (subse- 

 quently yellow) sac; those between the 



3 Y 



