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On Generation and corruption   

adaptable in shape, is not determinable by any limit of its own: while

'dry' is that which is readily determinable by its own limit, but

not readily adaptable in shape.

From moist and dry are derived (iii) the fine and coarse, viscous

and brittle, hard and soft, and the remaining tangible differences.

For (a) since the moist has no determinate shape, but is readily

adaptable and follows the outline of that which is in contact with it,

it is characteristic of it to be 'such as to fill up'. Now 'the

fine' is 'such as to fill up'. For the fine' consists of subtle

particles; but that which consists of small particles is 'such as to

fill up', inasmuch as it is in contact whole with whole-and 'the fine'

exhibits this character in a superlative degree. Hence it is evident

that the fine derives from the moist, while the coarse derives from

the dry. Again (b) the viscous' derives from the moist: for 'the

viscous' (e.g. oil) is a 'moist' modified in a certain way. 'The

brittle', on the other hand, derives from the dry: for 'brittle' is

that which is completely dry-so completely, that its solidification

has actually been due to failure of moisture. Further (c) 'the soft'

derives from the moist. For 'soft' is that which yields to pressure by

retiring into itself, though it does not yield by total displacement

as the moist does-which explains why the moist is not 'soft', although

'the soft' derives from the moist. 'The hard', on the other hand,

derives from the dry: for 'hard' is that which is solidified, and

the solidified is dry.

The terms 'dry' and 'moist' have more senses than one. For 'the

damp', as well as the moist, is opposed to the dry: and again 'the

solidified', as well as the dry, is opposed to the moist. But all

these qualities derive from the dry and moist we mentioned first.' For

(i) the dry is opposed to the damp: i.e. 'damp' is that which has

foreign moisture on its surface ('sodden' being that which is

penetrated to its core), while 'dry' is that which has lost foreign

moisture. Hence it is evident that the damp will derive from the

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