$8 One Thousand Objects 



cans). The receptacle containing the spores are urn- 

 shaped. 



407. FILMY FERN CAPSULES (Hymenophylluni). The 

 two-valved receptacle in either British species may be 

 mounted in a cell with a portion of the frond, as also all 

 other ferns, and viewed as an opaque object. 



408. WOODSIA FRUIT ( Woodsia hyperborea). A portion 

 of the fertile frond, showing the fringed clusters of spore- 

 cases, is an interesting object. 



409. .JERSEY FERN (Gymnogramma leptophylla). The 

 clusters of spore-cases are long, and arranged in a line; 

 may be viewed /;/ situ on a small fragment of a frond. 



410. GOLD FERN (Gymnogramma Mertensii). This is 

 one of the commonest gold ferns, of which a small portion 

 of the frond should be mounted, so as to examine the 

 spore-cases and scales of the under surface. 



411. LADY FERN (Athyriumfilix-fcemind). One of the 

 commonest ferns, of which the fertile frond should be 

 examined. 



412. SCALY FERNS (Goniophlebium sp.) Many of the 

 species of this genus are scaly, and consequently interest- 

 ing objects. Some are cultivated in this country. 



413. CIONIDIUM FERN (Cionidium Moorci). The sin- 

 gular way in which the spores are arranged at the edge of 

 the fronds renders this a desirable object. 



MOSSES. The cell-structure of the leaves and fruit of 

 mosses are favourite objects with many microscopists. The 

 cells of the leaves vary much in form, and as they are easily 

 procured, and as easily preserved, will probably become 

 more popular than they are. 



414. LEAF CELLS (Bryum ccespifidum}. These cells are 

 rhombic and about twice as long as broad, and are found 

 at the base of the leaves, which often differ in character 

 from the other portion. (PI. VI., fig. i.) 



415. Moss LEAF (Bryum capillare}. The cells in the 

 leaf of this species are beautifully distinct ; the granules 



