AZOLLA AND SALVINIA. 



567 



the nuclcary membrane : lobes somewhat 

 displaced. 



PI. CXXII. f. I.,C, 7. (Yellow) sac, and its incrustation removed, 

 shewing the trilineal mark on its vertex. 

 „ f. I.,8. Part of the incrustation. 

 „ i. I.,9. The same burst, and emptied of most of its 



contents. 

 „ f. I., 10. (Yellow) sac. 

 „ f. I., 1 1. One of the lobes, pulled off. 

 „ f. I., 12. One of the radicular fibres, 550 times. 



{Development of the other kind of capsules and their contents. ) 



PI. CXX. f. L Young capsule. 



„ f. I.,2. Nucleus and basilar protuberances detached. 



f. I.,3* The same magnified, about 300 times. 

 „ f. IV. a. Nucleus and basilar protuberances of another 

 more developed young capsule. 

 PI. CXXVII. f. I.,l. One of the lowest or least developed protu- 

 berances, (very young secondary capsule.) 

 „ f. I. ,2. Another more advanced. 

 PI. CXX. f. IV., 1. Ditto still more advanced. 

 „ f. IV.,2. Ditto ditto. 



„ f. IV. ,3. Ditto ditto in connection with curious, joint- 

 ed, often very irregular bodies, the history 

 of which was not traced. 



PI. CXXVII, f. I.,4, Young secondary capsule more advanced : 

 burst by pressure. 4a. Young trifacial cells 

 shewn in the escaped grume. 

 „ f. I., 46. One of these trifacial cells, about 50O times. 



PI. CXX. f. Ill, 1,2. Portion of the contents of one of these se- 

 condary capsules, shewing the parent cells, 

 and enclosed (trifacial cells) or spores : on- 

 ly observed once ; 300 times. 



PI. CXXVII, f. I., 6. Young secondary capsule, for the most part 

 filled with grume and (yellow) trifacial 

 cells. 



„ f. I.,7. Ditto more advanced : the primary masses) 

 are being developed. 



