having, as we conceive, said quite enough to prove the truth of our allegation that, in reference to the first question discussed, in which our original visual sensations are represented by Berkeley to be mere internal feelings, Mr Bailey understood and stated those feelings to signify sensations in which no perception of extension whatever was involved. However, as Mr Bailey further remarks that, "although Berkeley's doctrine about visible figures being neither plane nor solid, is thus consistent with his assertion that they are internal feelings, it is in itself contradictory,"[1] we shall contribute a few remarks to show that while, on the one hand, the negation of extension is not required to vindicate the consistency of Berkeley's assertion, that visible objects are internal feelings, neither, on the other hand, is there any contradiction in Berkeley's holding that objects are not seen either as planes or as solids, and are yet apprehended as extended. Mr Bailey alleges that we are "far more successful in involving ourselves in subtle speculations of our own, than in faithfully guiding our readers through the theories of other philosophers. " Perhaps in the present case we shall be able to thread a labyrinth where our reviewer has lost his clue, and, in spite of the apparent contradiction by which Mr Bailey has been gravelled, we shall, perhaps, be more successful than he in "collecting Berkeley's meaning from the whole sum and tenour of his discourse."
First, with regard to the contradiction charged upon the bishop. When we open our eyes, what do we behold? We behold points—minima visibilia—out of one another. Do we see these points to be in the same plane? Certainly not. If they are in the same plane we learn this from a very different experience from that of sight. Again, do we see these points to be not in the same plane? Certainly not. If the points are not in the same plane we learn this, too, from a very different experience than that of sight. All that we see is that the points are out of one another; and this simply implies the perception of extension, without implying the perception either of plane or of solid extension. Thus by the observation of a very obvious fact, which, however, Mr Bailey has overlooked, is Berkeley's assertion that visible objects are apprehended as extended, and yet not apprehended either as planes or solids, relieved from every appearance of contradiction.
It must, however, be admitted that Mr Bailey has much to justify him in his opinion that extension must be apprehended either as plane or as solid. None of Berkeley's followers, we believe, have ever dreamt of conceiving it otherwise, and finding in their master's work the negation of solid extension specially insisted on, they leapt to the conclusion that the bishop admitted the original perception of plane extension. But Berkeley makes no such admission. He places the perception of plane extension on precisely the same footing with that of solid extension. "We see planes," says he, "in the same way that we see solids."[2] And the wisdom of the averment is obvious; for the affirmation of plane extension involves the negation of solid extension, but this negation involves the conception (visually derived) of solid extension; but the admission of that conception, so derived, would be fatal to the Berkeleian theory. Therefore its author wisely avoids the danger by holding, that in vision we have merely the perception of what the Germans would call the Auseinanderseyn, that is, the asunderness, of things—a perception which implies no judgment as to whether the things are secerned in plane or in protensive space.
With regard to the supposition that, in order to preserve Berkeley's consistency, it was necessary for him to teach that our visual sensations, (colours namely,) being internal feelings, could involve the perception neither of plane nor of solid extension, that is to say, of no extension at all, according to Mr Bailey's ideas, we shall merely remark, that there appears to us to be no inconsistency in holding, as Berkeley does, that these colours, though originally internal to the sight, are nevertheless perceived. as extended among themselves.
We shall now say a few words on the relevancy of the question, for Mr Bailey denies that this question, con-
