A Dissertation on the probable Cause of the Deluge. 35 
ble, by being a long time preserved in spirits, which I have 
Jaid before this learned Society, it will be found, that the 
only difference between Forster’s animalcule, and the me- 
dusa scintillans, is in the appéarance of the opake parts, 
shown in the microscopic views. 
Many writers have ascribed the light of the sea to other 
causes than Juminous animals. Martin supposed it to be 
occasioned by putrefaction: Silberschlag believed it to be 
phosphoric: professor J. Mayer conjectured that the sur- 
face of the sea imbibed light, which it afterwards discharged. 
Bajon and Gentil thought the hight of the sea was electric, 
because it was excited by friction. Forster conceived that 
it was somctimes electric, sometimes caused from putrefac- 
tion, and at others by the presence of living animals. Fou- 
geroux de Bondaroy believed that it came sometimes from 
electric fires, but more frequently from the putrefaction of 
marine-animals and plants. 
I shall not trespass on the time of the Society to refute 
the above speculations: their authors have left them unsup- 
ported by either arguments or experiments, and they are 
imconsistent with all ascertained facts upon the subject. 
[To be continued. ] 
VI. On Dr. A. Walker’s Opinion, respecting the general 
Deluge, the Formation of Mountains, the Ruptures of the 
Strata, Sc. by the Approach of a Comet to the Earth. 
Communicated ly Mr. Joux Fanrey. 
To Mr. Tilloch. 
Sir, Harrennic lately to have met with a small work in 
32™°, entitled, “* An Account of the Eidouranion, or Trans- 
parent Orrery, invented by A. Walker, M.D.S. as lectured 
upon by hisson W. Walker,” the sixth edition, Bury, 1786, 
to which there is added, A Dissertation on the Deluge and 
other subjects connected with geology; I find therein some 
-views of the subject, which | never remember to have else- 
where seen in print ; and conceiving it probable that it may 
have been so with others of yourgeological readers, I request 
that you will give a place to this dissertation in your next 
number. I have no remarks at present to make on it, but 
am P Your obedient servant, 
Westminster, Jan. 2, 1811. JOHN FAREY, Sen. 
a 
«A Dissertation on the probable Cause of the Deluge. 
“So perfect are the laws by which this wonderful system 
OF) is 
