92 THE HEATH. 



of a bright orange colour ; another, equally abun- 

 dant, or perhaps more so, is of a beautiful sulphur 

 colour; a third of an ashy grey, traversed by 

 whitish lines; another of a dark olive, &c. &c.* 



CRAB'S EYE LICHEN. 



The rock in fact, if it be not so productive of 

 stately plants as the hedge-bank, or corn-field, is 

 quite as diversified as to colour, and has at least 

 this advantage, that in summer and winter it is 

 always the same ; here is neither fading of flowers, 

 nor shedding of leaves. Now direct your atten- 

 tion to the foot of the rock, especially to that 

 part of it which does not descend perpendicularly 

 into the ground, but slopes gradually to its base. 

 Here you will find several species of Moss, closely 



* These belong to the genus Parmelia. 



