f elation to the Dew^ but after finding the Gnats to be multiplied 
and the little watry Animals to be much leflened in quantity, 
and finding great numbers oftheir empty skins floating on the 
face of his Om^He thoughc,he had juft reafon to perfwade him- 
felfj the Gnats were by a fecond Birth produced of thofe little 
Animals. 
That vapouring away great quantities of his putrefied Derv 
ill Glafs Bafons, and other Earthen glafed Veflels, He did at 
laft obtain, as he remembers, above two pound of Gr^zy^ Eai tb, 
which when he had waflied with more of the fame D^2p out of 
all his Bafons into one, and vapoured to ficcity, lay in leaves 
one above anotherj not unlike to fome kind of brown Paper, 
but very friable. 
That taking this Earth out, and after he had well ground it 
on a Marble, and given it a fmartFire, in a coated Retort of 
Glafs, it foon melted and became a Cake in the bottom, when 
it was cold, and looked as if it had been Salt and Brimftone in 
a certain proportion melted together 5 but, as he remembers, 
was not at all inflamable. This ground again on a Marble, he 
faith, did turn Spring water of areddifli purple Colour. 
1 hat by often calcining and filtring this Earth, He did at lafl 
extract about two ounces of a fine fmall mhite 6'^//^, whicb,lcok*d 
on through a good Microfcope, feemed to have Sides and Angles 
in the fame number and figure, as Rochpeeter, 
The Motion of the Second Comet fredtUed ^ 
by the fame Gentleman ^ mho fredi&ed that 
oftheioxmtv. 
Monfieur Awx^ut, the fame Perfon, that not long fince com^ 
municated to the World his Epbemerides touching the courfe of 
the former Comet^znA recommended feveral Copies of them to- 
the 7(o)W vJcw/^j, to compare their Obfervations with his Ac- 
countj and thereby, either to verifie his Predidtions^or to fliew, 
wherein they differ, hath lately fent another Ephemerides con- 
cerning the Motion of the Second Cornet^ to the fame end^that 
invited him to fend the other.. In, 
