170 



CHAPTER XL 



ON LICHENS. 



LICHENS. OXALIC ACID. TRIPE DE ROCHE. ICELAND MOSS. 



REINDEER MOSS . CUDBEAR. PERELLE. ORCHILL. LITMUS. 



COCHINEALS CARMINE, &C. TYRIAN PURPLE. MUREX AND 



BUCCINUM. ACCOUNT OF THE DYE. FABLE OF ITS DISCOVERY. 



ROYAL COLOR. HYACINTHINE CURLS. MARTAGON LILY. 



MOLLUSCA. FORMATION OF SHELLS. SEPIA. INDIAN INK. 



POLYPUS AND KRAKEN. EIGHT-ARMED CUTTLEFISH. NAUTILUS. 

 CHAMA. FINNA AND PINNOPHYLAX. 



" Rocks sublime 



To human art a sportive semblance bore, 

 And yellow lichens color'd all the clime 

 Like moonlight battlements and towers decay 'd by time." 



CAMPBELL. 



ESTHER. 



MAMMA, when you were telling us, the other day, the 

 properties of the different Jllgx, you were so kind as to 

 promise to describe the uses of the other orders of Crypto- 

 gamia. 



MRS. F. 



That I will, with pleasure, though my cryptogamic know- 

 ledge is so limited that I cannot, I fear, give you so full 

 an account as I could wish. However, suppose we select 

 the Lichens for to-day's conversation. 



ESTHER. 

 Thank you. 



