255 
XXIV. Thongs. Crypt. Algae. 
Walls, January, P. Common. 
857. Dyer's Liver-wort. — L. calcareus. 
Crust white, tubercles black. — Dillenius. 
XVIII. 8. 
Walls, January, P. Common. 
858. Sunk Liver-wort. — L. immersus. 
Tubercles black, sunk in the stones. — Sow- 
erby. 193. excellent. 
Chalk or Limestone, January, P. Rare. 
Barton ^ — Els tow. 
Ohs : 
Tubercles black, very minute, color of thz crust very white, 
substance very thin. 
85 9. Black-knohhed Liver-wort. — L. san- 
guinarius. 
Crust ashy-green, tubercles black. — Sow- 
erby. 155. excellent. 
Trees, January, P. Common. 
860. Moss Liver-zvort. — L. muscorum. 
Crust ash-colored, tubercles black. — ReU 
ban’s plate at page 424. 
On ?vIosses, January, P. Rare. 
Nezvenham Wall. 
Ohs : 
The crust is a mass united and grozvinr amongst various 
■species of the Ilypna, tubercles globular. 
Hoary 
