Acoount of some Discoveries in Chemical Philosophy. 36f. 
P. 142, fields of South Wales, and Whitehaven, are de- 
tached parts of the same strata; see my Note on 
page 135. 
143, 1, 2, fresh water muscle-shells*.—* The Muscles 
in Coal-measures, which I have seen in great 
numbers, are ail of them, so much dess than our 
Pond Muscles, that were there no other marks to 
distinguish them, they ought, for Gevlogical pur- 
poses, to be considered of different species, and 
not confounded under one name. But Nautili, 
Anomia, &c. occur in the Derbyshire Coal strata, 
P. M. xxxix. p. 352; and in the Coal strata NW 
of Whitby, many Shells occur usually denomi- 
nated Marine ; and above the Coals in Sutherland, 
the numbers and varieties ot these are so very great, 
P.M. xxxix. p. 337, that we ought no longer to 
hear of * fresh-water productions,’ as characteriz- 
ing the Coal strata: see my Note on p. 60. 
{To be continued.] 
LX. 4 short Account of some Discoveries in Chemical 
Philosophy. By Ez. Waker, Esq. 
Aurnoven greater improvements have been made in che- 
mistry, within these last thirty or forty years, than during 
many ages betore. yet it still remains in a very imperfect 
state. No regular theory has yet been investigated, from 
those new discoveries, by which the various chemical phz- 
nomena can be explained. 
Hence it appears, that chemistry is now exactly in the 
same state that astronomy was before the days of Kepler : 
it consists of a very valuable and extensive collection of 
facts; but that universal law, which governs all chemical 
phenomena, still remains undiscovered. Some chemists 
of the present day treat the idea of such a law as chimeri- 
cal; but so far as we are acquainted with the operations of 
nature, we find that they are not produced ‘* by partial but 
by general laws.” 
It is a truth well known, that the same power, which 
causes a drop of rain to fall to the ground, extends its in- 
fluence to every particle of matter contained in the remo- 
test planet in our system. And by reasoning from analogy 
we may infer, that the feeble light of the glow-worm, the 
vivid flash of lightning that illuminates our hemisphere, 
the first increments of heat, the most intense fires, the re- 
spiration 
