c. The third trope turns on the difference in the constitution of

the organs of sense as related to one another; _e.g._ in a picture something appears raised to the eye but not to the touch, to which it is smooth, &c.[199] This is, properly speaking, a subordinate trope, for in fact a determination such as this coming through some sense, does not constitute the truth of the thing, what it is in itself. The consciousness is required that the unthinking description which ascribes existence to blue, square, &c., one after the other, does not exhaust and express the Being of the thing; they are only predicates which do not express the thing as subject. It is always important to keep in mind that the different senses grasp the same thing in contradictory ways, for by this the nullity of sensuous certainty is revealed.