Querics and Answers. 483 
Carrageen or Trish Moss, and Duck’ s-foot Conférva. — Sir, I am anxious 
to exchange a little practical for some scientific knowledge, through the 
medium of your Magazine. I have no doubt, the advantage will be all on 
my side, though you may chance to have readers to whom my information 
may be useful. Last autumn, a friend gave me a packet of sea-weed, to 
make a jelly for coughs, and I found it an ef- 
Yoh. fectual remedy ; It was gathered on the coast of 
( Va Y Ireland, and called by the country-people “ car- 
tJ rageen or Irish moss.” ( jig. 119.) On my ar- 
rival here, in Dec. 1829, I found a considerable 
quantity on the shore. I considered it a com- 
mon white J’ucus: it approaches nearer to 
Withering’s /’ucus albidus than to any I can 
discover. It forms, after boiling, a strong trans- 
119 parent jelly; and, with the admixture of lemon 
and sugar, is a very agreeable medicine. For 
the last two months, there has been none on the 
shore; and although we have now a very weedy 
beach, it was after a long search I found the 
small specimen enclosed. In my collection of 
marine plants, I have much of what is vulgarly 
called Duck’s-foot Conférva (fig. 120.), but which is, I presume, a coral- 
line. Under the latter suppo- 
iM) 
sition, | was surprised to find 
that, on exposure to the fire, it 
emitted a powerful acid smell, 
similar to that of lemons. I 
should be glad to hear this ac- 
counted for, and also to have 
the correct names of the en- 
closed. With sincere thanks 
for the pleasure derived from 
the perusal of your interesting 
work, I remain, Sir, yours, &c. 
— Brighton, April 20. 1830. 
The Carrageen or Irish Moss 
(fig. 119.) is the Ficus crispus 
var. 8. of Turner’s Historia Fu- 
corum, vol. iv. t.217. f.c. The 
Duck’s-foot Conférva (fig. 120.) is the Flistra foliacea of Ellis’s Coroll. 
t.2.£.8.—D.D. May 22. 1830. 
A Fossil Trilobite. — Sir, Having lately met with a fossil of the trilobite 
species ( fig. 121.) in a part of the country where nothing of the kind, as far 
as Il am able to as- 
121 certain, has ever 
been hitherto dis- 
covered; and, as 
“far, oF Wi), Yi 
YA Wf Wii) 
Uy 
a, A portion of the surface magnified. 
AN Mr. Sowerby justly 
45% 4] remarks that “ trilo- 
35555 bites occur only in 
2555; 
transition rocks, and 
the lowest beds of 
the mountain lime- 
stone, their presence 
in any country is an 
important geologi- 
cal feature ;” I take 
the liberty of sending you an account of the same, which may probably be 
“hy 
A, Ay " 
NIT 
‘Nuun 
