1898 | THE GERMINATION OF FERN AND MOSS SPORES 45 
Fics. 3, 4. Protonemata of Funaria grown in the dark; eight days on pep- 
tone, sugar, and agar-agar. X 330. 
FIGs, 2, 3, 4 show a large number of starch masses. 
Fig. 5. Prothallium of Ceratopteris thalictroides, grown in darkness, at 
32°C. In culture sixteen days. 
Fic. 6. Apical portion of a prothallium of the same Species, showing lon- 
gitudinal as well as transverse divisions. X 330. 
Fic. 7. Germinating spores of the same age as in fig. 5, but grown in 
light at a temperature of 19°—21°C. X 330. 
