C4S0 
(houIderSj but one only Body , and that well form'd , yet having 
double entralsinall refpefts. The Ewe remains well. The Mon* 
fterdyed, and is now in ray Cuftody^ after it hath been dried in 
an Oven^ and by the Sun, 
Some Observations made in Mines, and at Sea^ occafioning a 
Conje5hre about the Ongme of Wind : Imparted by the 
fame Mr. C« 
One Joh^ Gill^ a Man well experienced in Mineral affairs^ diP 
eourfing with me about the Wind and its Origine^ declared to me 
his thoughts conGerning the fame^as a refult of twenty years Expe- 
rience and Obfervations of his own. 
F;>/?5 He affirmed ^ that if in digging deep under ground^ the 
Work-men meet with Water, they never want Air or Wind 5 but 
if they mifle Water (as fometimes ithappenSj even at 12 or 16 Fa- 
thoms depth) they are deftitute of convenient Air^either to breath 
in^ or to make their Candles burn. 
Next^ When (as ufual) there happens to be a great quantity of a 
Winters (landing water , in a deep Mine, they commonly bring, 
or drive up an AdU for drawing away fuch water : But as foon as 
that part of the Level is made^ that any 4)fthe fl:anding Water be- 
gins to run away^ the Men mull: fecure themfelves,as well as they 
can, from danger of being dafh'd in pieces againft the fides of the 
Adit : For the included Air or Wind in the ftanding Water.breaks 
forth with fuch a terrible noyfc^ as that of a Peece of Ordnance^ 
and with that violence^ as to carry all before it^ loofening the ve- 
ry Rocks^ though at feme diftancc in the Work or Adit* 
Thirdiy^hc hath obferved on fevcral occafions^going to and fro, 
between London and Fliwouth , by Seaj that being in a Calm, that 
way, which the Sea began to Loom or m.ove. the next day the 
Wind was fure to blow from that point of the Compafi ^ towards 
which the Sea did Locmthe day before. 
An Account of Hail -Stones of an unufual bignefs^ Commu7U- 
cated by D. Nath. Fairfax, with his Reflexions on them. 
This Account came but very lately to hand^ tlmtgh the thwg hapned 
a while agoe 5 the Ingenious Author thereof^ having hut tzevply entred 
?>//(?^ Philofophical Correfpndence with the Publiflier. 
5^//y3 17, 1666. About 10 in the Fore-noon^ there fell a violent 
B b b llorm 
