[ 2 3 ° ] 
fometimes two feet in length, and are generally 
covered with a thin cruft of coal. The fpecimina 
Dr. Woodward exhibits, Catalogue B, pages 106, 1 07. 
fpecimina q. 22. and q. 32. are analogous to this, 
tho’ not exactly the fame. The Dodtor’s foftiles 
were from Haigh in Lancafhire ; and he imagines 
the impreflions to he made by vegetables of the fir 
kind. Volckman alio, in his Silefia fubterranea , tab. 
22. fig. 2. figures a branch with a rhomboidal work 
on it, and with three long narrow leaves, which 
feems akin to this impreftion. 
N°. 2. feems of the reed tribe : the knobs placed 
in rows, which are like the veficles on the quercus 
marina , and fome other alga, are very remarkable. 
Woodward, Catalogue B. page 9. fpecimen a. 1. ex- 
hibits an impreftion akin to this, which he imagines 
to be of the fern kind. 
N°. 3. from a coal-pit in Yorkfliire. I cannot 
but think this impreftion is owing to fomewhat of 
the fir kind. Dr. Woodward, who exhibits fuch 
a like impreftion, Catalogue B. p. 16. fpecimen a. 
108. imagines the fame : his words are, “ The im- 
c< prefiion is much like what might be made by the 
“ branches of the common fir, after the leaves are 
u fallen or ftript off.” 
N°. 4. feems to be of the fame kind as N°. 2. 
N°. 5. This extraordinary impreftion is from 
Moftyn-colliery in Flintfhire. It is a little obfcured j 
but, when attentively viewed, exhibits a reticular 
impreftion, the mefhes whereof are rhomboidal hol- 
lows, and the fides of the rhombs, or the net-work, 
are raifed, or in relief. 
N°. 6. is from Newcaftle. Volckman, ibid, part 3. 
tab, 4. fig. 9. feems to be of this kind, 
N°. 7. 
