C 118) 
Expcrimenta in aere funt fada : addenda ergo erit 
unicmq; numero gravitas aeris, ut habeatur materia- 
rum gravitas in vacuo. Eft autem aeris gravitas fpe- 
ciiica ad illam aquas, fere ut 1 ad 1000, utpote Philoso- 
phic naturalis cultoribus abunde patet. 
"V II* Some Confide) ations about the Caufe of the uni - 
yerfal Deluge, laid bef ore the (Royal Society , on 
the nth of December 1694. Dy Dr. Ed- 
mond Halley, (R. S. S. 
T H E Account we have of the univerfal Delude is 
no where fo exprels as in the Holy Scriptures ; 
and the exadf Circumflances as to point of Time, do 
ihew that fome Records had been kept thereof more 
particularly than is wont in thofe things derived 
from remote Tradition, wherein the Hiftorical Minu- 
tia are loft by length of Time. But the fame feem 
much too imperfect to be the Refult of a full Revela- 
tion from the Author of this dreadful Execution up- 
on Mankind, who would have fpoke more amply as 
to the Manner thereof, had He thought fit to lay open 
the Secrets of Nature to the fucceeding Race of Men ; 
and I doubt not but to all that confider the 7th Chap- 
ter of Genefis impartially, it will pals for the Remains 
of a much fuller Account of the Flood left by the Pa- 
triarchs to their Pofterity, and derived from the Re- 
velation of bioah and his Sons. It muff be granted, 
that there are fome Difficulties as to the Conftru&ion 
of the Ark, the Reception and Agreement of the 
Animals among themfelves, and Prefervation of it in 
lo imxnenfe and boundlefs an Ocean, during that IVind 
which 
