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