LIST OF ILLUSTRATIONS. 



1. Bryum caspiticium, capsule, peristome, leaf cells ... 5 



2. Spores of Moss ; gemmiform state of Aulacomnion androgynum 9 



3. Phascum serratum, capsule, protonema, and leaf, enlarged . 1 1 



4. Pottia truncata, operculum, leaf, and leaf cells . . .12 



5. Hypmim rutabulum, fruit, leaf, peristome, leaf cells, enlarged 13 



6. Funaria hygrometrica, antheridium, antherozoids . . 15 



7. Funaria hygrometrica, archegonium 17 



8. Origin of the sporogonium . . . . . . .18 



9. Funaria hygrometrica, longitudinal section of the theca . .19 



10. Splachnum ampullaceum, plant, capsule, leaf cells . . .23 



11. Encalypta streptocarpa, plant, calyptra, leaf, and capsule . 24 



12. Capsule of Pottia intermedia 24 



13. Andrecea alpina, plant, leaf, and leaf cells. Andreaa nivalis, 



plant, leaf, leaf cells, and capsule . . . . 25 



14. Indehiscent capsule of Phascum cuspidatum . . . .26 



15. Capsule of Grimmia .26 



16. Atrichum undulatum, plant, leaf, leaf cells, capsule . . 27 



17. Bartramia pomiformis, plant, capsule, calyptra .' .29 



1 8. Fissidens bryoides, plant, conduplicate leaf, male flower, and 



capsule i 9 . -30 



19. Grimmia pulvinata, plant, fruit, leaf. Grimmia orbicularis . 34 



20. Fissidens taxifolius, Funaria fas cicularis, Zygodon -viridissima, 



Orthotrichum affine . . - 3^ 



21. Mnium undulatum, Mnium hornum 37 



22. Polytrichtim formosum, fruit, calyptra, capsule, apophysis . 39 



23. Hypmim (Thuidium) tamariscinum, plant, leaf, papillae. . 41 



