C 4*0 3 
difference, I called for a lighted candle, and having 
firft fet fire -to the Lichen Roccella, it yielded the fame 
fmell that burnt vegetables ufually do ; but when 
the Coralline (which was Mr. Miller’s fpecimen) 
was burnt, it filled the room with fuch an offenfive 
fmell like that of burnt bones, or hair, that the door was 
obliged to be opened, to diffipate thedifagreeable fcent, 
and let in frefh air. 
Another argument that Dr. Pallas offers the world 
of the vegetable nature of Corallines, or rather a 
proof of their not being of an animal nature, are Count 
Marfigli’s Chemical experiments on the Corallina 
Officinalis (Hiff. Mar. p. 72.) where he fays it 
neither contains animal oil nor volatile falts. 
But, to prevent fuch plaufible arguments from 
tniffeading mankind, I determined to have fair and 
accurate experiments made on this fubffance. Ac- 
cordingly I applied to Mr. Peter Woulfe, F. R. S. a 
gentleman diffinguifhed for his great knowledge in 
chemiftry ; and in order to have the fpecimens frefh 
from the fea, I applied to a worthy member of this 
Society, the Right Honourable the Earl of Hillfbo- 
rough, for Mr. Potts, the Secretary to the Poff- 
Office, to procure me a fufficient quantity of the 
Corallina Officinalis from the fea-coaft near Har- 
wich : this parcel, about two months ago, I fent to 
Mr. Woulfe ; and in anfwer have received the fol- 
lowing letter, with an account of his experiments 
made on it. 
Clcrkenwcll, 
