CRYPTOGAMIA. 4^3 



^seen in the latter volumes of English 

 Botany more especially. 



Mosses are tbund in the hottest and 

 coldest climates. They are extremely 

 tenacious of life, and, after being long 

 dried, easily recover their health and vi- 

 gour by moisture. Their beautiful struc- 

 ture cannot be too much admired. Their 

 species are numerous, and in some cases 

 difficult to determine, particularly in the 

 genera Tortula and Orfhoirichum ; nor is 

 the generic character of the latter so easy 

 or certain as most others. Schreber, Dick- 

 son, Svvartz, Bridel, Weber, Mohr and 

 Turner are great names in this department 

 of Botany, besides those of whom we have 

 already spoken. 



3. Hepatica, Liverworts. Of these the herb- 

 age is commonly frondose, the fructification 

 originating from what is at the same time 

 both leaf and stem. This character, how- 

 ever, proves less absolute than one founded 

 on their capsules, which differ essentially 

 from those of tlie preceding Order in hav- 

 ing nothing like a lid or operculum. The 



