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Meteorology   


less in cold that in hot seasons, for in winter the surrounding air

and water contain but little heat and it has no power, but in summer

there is more. Again, what is frozen does not putrefy, for its cold is

greater that the heat of the air and so is not mastered, whereas

what affects a thing does master it. Nor does that which is boiling or

hot putrefy, for the heat in the air being less than that in the

object does not prevail over it or set up any change. So too

anything that is flowing or in motion is less apt to putrefy than a

thing at rest, for the motion set up by the heat in the air is

weaker than that pre-existing in the object, and so it causes no

change. For the same reason a great quantity of a thing putrefies less

readily than a little, for the greater quantity contains too much

proper fire and cold for the corresponding qualities in the

environment to get the better of. Hence, the sea putrefies quickly

when broken up into parts, but not as a whole; and all other waters

likewise. Animals too are generated in putrefying bodies, because

the heat that has been secreted, being natural, organizes the

particles secreted with it.

So much for the nature of becoming and of destruction.

2



We must now describe the next kinds of processes which the qualities

already mentioned set up in actually existing natural objects as

matter.

Of these concoction is due to heat; its species are ripening,

boiling, broiling. Inconcoction is due to cold and its species are

rawness, imperfect boiling, imperfect broiling. (We must recognize

that the things are not properly denoted by these words: the various

classes of similar objects have no names universally applicable to

them; consequently we must think of the species enumerated as being

not what those words denote but something like it.) Let us say what

each of them is. Concoction is a process in which the natural and

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