may be kept goodj 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 unfrozenj will appear quite vitiated 
by the exceffive Cold ? Where it is further in^juired into, 
whether (ome Plants, and other Medicinal thingSj that have 
fpecifique Vertues, will loofe them by being throughly con* 
gealed and ( feveral wayes ) thawed ? And alfoj whether fro» 
zen and thawed Harts-horn will yield the fame quantity and 
ftrength of Salt and falioe Spirit y as when unfrozen > Item, 
Whether the EUHrical facultvy of Jfw^^r, and the AttraSlive or 
Direffive Virtue of LQadfienes will be either impairedj or any 
wayes altered by intenfe Cold ? This Head is concluded by 
fome confiderable remarks touching the operation of Cold up- 
oii Bones, Steel, Brafs, Wood, Bricks. 
7, What Bodies are expanded by being frozen, and how 
that expanfion is evinced ? And whether it is caufed by the in- 
rrufion of Air ? As alfo, whether^ what is contained in icy bub- 
bles, is true and Springy Air^ or not. 
85 What Bodies they are, that are contrad:ed by Cold i and 
how that Contradion is evinced ? Where 'tis inquired , whe- 
ther Chymical Oyks will 3 by Congelatiouj be , like expreffed 
Oylesj contra&ed, or, like aqueous Liquors, expanded f 
9, What are the wayes oiMeafuring the ^antity the Ex- 
panfion and Contraction of Liquors by Cold ? And how the 
Author's account of this matter agrees with what Navigators 
into cold Climats, mention from experience, touching pieces 
oflceashigh as the Mafts 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 Expanfion of freezing water is > Where 
ate enumerated the feveral forts of Veffels, which being filled 
G ' with 
