The mystery of ice-making in ancient times?

[MikeHolm]

good thing you specified the time frame about when you were married to this woman. You might have been on the couch this eve.

[pirestani]

A possible answer;
It have been written somewhere in an old national story about ancients,fighter men could change"the spirit of fire" to "ice" by capturing them into the flexible trapped sack and taking them to the middle of oceans by their long trip sail ship.
Now there are a few theories which assume those "spirit of fire" were possibly mixture of butane&propane etc which were available over some oil wells . they were locating the sack(or goatskin) inside an insulated pail and dropping them to sink to the sea's depths. after hours the gas inside sack could be condensed (because temp.and pressure were suitable enough )then they hauled up the pail hanging in rope very rapidly.this time liquid inside tends to be evaporated (boiled) because of sudden decrease of pressure (near atmosphere). sacks skin absorb heat from water in pail around itself and make ice layers .
Of course I'm sure many hidden tricks must be used during that process.can we have other comments to complete this theory?
S.P