CONTENTS. 
PAGE 
INTRopucTION, I 
CHAPTER I.—MOSSES. 
Beauty of Mosses—Classification—Appearance—Stems— Roots—Leaves— 
Harmonies of colours— Spiral arrangement of leaves—Organs of fructi- 
fication—Antheridia, Pistillidia, and Phytozoa—Gemmz—Proliferous 
mosses—Power of regeneration—General diffusion—Alpine mosses, and 
theory of their distribution—Particular limitations of mosses—Madeira 
mosses—Splachnum growing on animal substances—Buxbaumia and 
Diphyscium—Social character of mosses—Bog-moss—Historical and 
personal associations—lIIlustrations of the beauty of mosses—Uses in 
the economy of man and of nature—Formation of peat—Hepatica— 
Structure and peculiarities—Lycopods—Hygrometric properties of 
Lycopodium squamatum—Structure and fructification of Club-mosses— 
- Uses—Analogical affinity—Geological facts connected with Lycopods, 25 
CHAPTER IIl.—LICHENS. 
Viewed as esthetic objects—Diversity of form—Description and associa- 
tions of Written Lichen—Huc and Gabet’s Tree of Ten Thousand 
Images—Structure of lichens—Affinities—Supposed parasitic nature— 
Peculiar modes of Reproduction—Longevity—Geographical distribu- 
tion—Lichens of Antarctic regions—Belts of vegetation on Chimborazo 
—Alpine lichens—Lichens as pioneers of all other plants—Adaptations 
of lichens to their circumstances—Uses on trees—Reindeer moss— 
Iceland moss—Tripe de Roche associated with Franklin—Manna of 
Israelites—Lecanora esculenta—Medicinal properties—Uses in arts 
and manufactures—Dye-lichens: Orchil, Cudbear, Perelle—Peculiar 
species—First land-plants—lichens on the tombstone, , i go 
CHAPTER III.—FRESH-WATER ALG. 
Revelations of the aquarium—Interest of Conferve derived from the 
element in which they live—Forming the boundary line between 
plants and animals—Nature and structure of green slime on ditches 
