GEOGRAPHICAL DISTRIBUTTON. 53 



of Mosses discovered at that date to be 2300, of which 

 473 are described for the first time in his work. Previous 

 to this but a few ^-ears^ Lindley calculated the number of 

 species at 1100, and of genera at 46, which shows how 

 much attention has been paid to the investigation of these 

 minute plants. 



