1897 THE MICROSCOPE. 135 
is one of those which, according to Claus, live in the body 
cavity of insects, finally escaping into damp earth, where 
they attain maturity and breed. 
Some Cryptogams. 
[From the Pharmaceutical Journal. ] 
If you have a microscope you will find the study of 
cryptogams very interesting, and will have no difficulty 
in obtaining plenty of material suitable for study. The 
mode of reproduction by gemme is here illustrated by 
sketches of some interesting specimens. Amongst mosses, 
Aulacomnion androgynum may be found (fig.1). The 
cut shows plant in fruit, a, gemma, b; and same magni- 
fied, c. It grows on shady banks and rocks. The fruit 
is ripe in May or June. 
Of the Hepattice a number of species are obtainable. 
Very widely (listributed is the liverwort, Lunnaria vul- 
garis, (fig. 2) and scale moss, Kantia trichomanis (fig. 3), 
both of which grow on damp banks, rocks, and on flower 
pots in green houses, In the case of the liver-wort, the 
gemme are borne in semi-circular cups on the fronds. In 
fig. 2 the fruitis shown, d; the frond bearing gemma, f. 
Those who wish assistance in studying cryptogams 
could write the professor of botany in the nearest college 
or in fact to any large college enclosing stamp for reply 
and furnishing specimens of plants. 
