FIG. 2. LATERAL LINES OF RHIZOME. 

 FIG. 3. Showing 



( Eachis (Gr. rachin, a spine, ridge). 



a. PART or LEAF OR FROND . . . . &amp;lt; Pinna (L. a feather). 



( Pinnule (L. pinnula, a little feather). 



b. TWO PINNULES VIEWED FROM BELOW ( J? dU8i &amp;lt; L &quot;^ * Cl ^ C V f ^ 



( Sorus (Gr. soros, a heap), a cluster of spore-cases. 

 FIG. 4. Showing FORKED VENATION AND INDUSIUM. 

 FIG. 5. SPORE-CASE OR SPORANGIUM. Showing 



Stalk. 



Case. 



Annulus (L. a ring). In e, a small part below the spores is inadvertently uncolourcd. 



Spores. 

 FIG. G. SPORE. Showing 



Exosporium (Gr. exo, outside ; spora, a seed). 



Endosporium (Gr. endon, within; spora, a seed). 



Protoplasm with oil-globules. 



Nucleus. 

 FIG. 7. DEVELOPMENT OF SPORE. Showing 



a. Endosporium protruded. 



b. Divided to form a young prothallus, with root-hairs. 



c. Old prothallus with root-hairs, male organs or antheridia, and female organs or archegonia 



(Gr. arclios, chief; gone, seed). 

 FIG. 8. PROTHALLUS UNDER IIIGH POWER. Showing 



r Cell-wall. 



CELLS . J prot P lasm - 



| Chlorophyll granules. 



^ Large vacuoles filled with cell-sap. 



