(48) " 
be made to fhrinkhj Snow and Salt, before it begin by Conge- 
lation to expiVid it felf 5 and then, how to meafure by the diffe- 
ring Weight and Denficy of the fame portion oi Water, what 
change was prodnced in ir, betwixt the hottell time of Summer, 
and firft glaciating degree of Cold, and then the higheft, which 
our Author could produce by Art : Where an inquiry is an- 
nexed, whether the making of thefe kind of Tryais with the 
waters of the particular Rivers and Seas, men are to fail on.may 
alFord any ufcful cftimate, whether or not, and how much, (hips 
may on thofe waters be fafely loadcn more in Winter, than in 
Summer. To which is added the way of makingexatt Difco- 
veries of the differing degrees of Coldnefs in differing Regi- 
ons, by fuch Thermometers^ as are not fubje(3: to the altera- 
tions of the Atmojphsres gravitation, nor to be frozen. 
5 . Whether in Cold, the diffufion from Cold Bodies be made 
more ftrongly downwards, contrary to that of Hot Bodies: 
Where is delivered a way of freezing Liquors without danger 
of breaking the Veflel, by making them begin to freeze at the 
bottoms ^be top, 
6. Whether that Tradition be true, that if frozen Apples or 
Eggs be thaw'd neer the Fire, they will be thereby fpoil'd , but 
if iramerfed in cold water, the Internal Cold will be drawn out, 
as is fuppofed, by the External Cold 5 and the frozen Bodies 
willbe harmlefly thawed ? Item^ Whether Iron, or other Me- 
tals, Glafs, Stone, Cheefe, ^c. expos'd ro the freezing Air 5 or 
kept in Snow or Salc^ upon the immerfing them in Water will 
produce any Ice > hem.Wh^it ufe may be made of what happens 
in the different waies of thawing Eggs and Apples, by applying 
the Obfervation toother Bodies^ and even to Men^ danger- 
oufly nipp'd by exceffive Cold. Where is added not only a 
memorable Relation, how the whole Body of a Man was fuc- 
cesfully thawed and cafed all over with IcCj by being handled, 
as frozen Eggs and Apples are ; but alfo the Luciferoufnefs of 
fuch Experiments as thefe : and likewife, what the effects of 
Cold may be , as to the Confervatiou or Deftrudion of the 
Textures of Bodies : and in particular, how Meat and Drink 
may 
