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may be kept good, in very Cold Countries, by keeping it un» 
der Water, without glaciation ? as alfo, how in extreme Cold 
Countries, the Bodies of Dead Men and other Animals may be 
preferved very many years entire and unputrefied? And yet, 
how fuch Bodies, when unfrozen, will appear quite vitiated 
by the exceffive Cold? Where it is further inquired into, 
whether fome Plants, and other Medicinal things, that have 
fpecifique Vertues, will loofe them by being throughly con* 
gealed and ( feveral wayes ) thawed ? And alfo, whether fro- 
zen and thawed Harts-norn will yield the fame quantity and 
ftrength of Salt and faline Spirit , as when unfrozen ? Item., 
Whether tne Elelirtcal faculty of ylmbeT, and the AttvaHliv e or 
Direftive Virtue of Loadjlones will be either impaired, or any 
wayes altered by intenfe Cold? This Head is concluded by 
fome confiderable remarks touching the operation of Cold up- 
on Bones, Steel, Brafs, Wood, Bricks. 
7, What Bodies are expanded by being frozen, and how 
that expanflon is evinced ? And whether it is caufed by the in- 
trufion of Air? As alfo, whether, what is contained in icy bub- 
bles, is true and Springy Air, or not. 
What Bodies they are, that are contracted by Cold; and 
how that Contraction is evinced ? Where his inquired, whe- 
ther Chymical Oyles will , by Congelation, be , like expreffed 
Oyles, contracted, or, like aqueous Liquors, expanded f 
9, What are the wayes of Meaformg the Quantity of the Ex- 
pansion and Contraction of Liquors by Cold ? And how the 
Author’s account of this matter agrees with what Navigators 
into cold Climat's, mention from experience, touching pieces 
of Ice as high as the Malts of their Ships, and yet the Depth 
of thefe pieces feems not at all anfwerable to what it may be 
fuppofed to be. 
10, How ftrong the Expanflon of freezing water is ? Where 
are enumerated the feveral forts of VefTels, which beino- filled 
G with 
