their great sensibility must make them highly affected by this straining. Besides, it signifies just nothing to the effect produced, whether a body has its parts connected and makes its impression at once; or, making but one impression of a point at a time, it causes a succession of the same or others so quickly as to make them seem united; as is evident from the common effect of whirling about a lighted torch or piece of wood: which if done with celerity, seems a circle of fire.

SECTION X.

UNITY WHY REQUISITE TO VASTNESS.

It may be objected to this theory, that the eye generally receives an equal number of rays at all times, and that therefore a great object cannot affect it by the number of rays, more than that variety of objects which the eye must always discern whilst it remains open. But to this I answer, that admitting an equal number of rays, or an equal quantity of luminous particles to strike the eye at all times, yet if these rays frequently vary their nature, now to blue, now to red, and so on, or their manner of termination, as to a number of petty squares, triangles, or the like, at every change, whether of color or shape, the organ has a sort of relaxation or rest; but this relaxation and labor so often interrupted, is by no means productive of ease; neither has it the effect of vigorous and uniform labor. Whoever has remarked the different effects of some strong exercise, and some little piddling action, will understand why a teasing fretful employment, which at once wearies and weakens the body, should have nothing great; these sorts of impulses, which are rather teasing than painful, by continually and suddenly altering their tenor and direction, prevent that full tension, that species of uniform labor, which is allied to strong pain, and causes the sublime. The sum total of things of various kinds, though it should equal the number of the uniform parts composing some one entire object, is not equal in its

afet non ne gins of our bodies. Besides the one already HCL Tem s mother very strong reason for the differThe mini nality hardly ever can attend diligently mre cu de ting it 1 me: if this thing be little, the and 1 Tumber of other little objects cannot attention the mind is bounded by the bounds ẹ, UNI TRI s tot tended to, and what does ux mi ne sme n effect: but the eye or the e deres 10 Lference) in great uniform Nimet fem their bounds: it has no rest,

2

Cell the mage is much the same tu we meat thing by its quantity must

1

a species of greatness arises from uri nat his minte consists in an

pars: we observed too, that suai ke power in sounds. des a man hings are clearer in one rza a urouter and that the senses bear a dasma me mucher. I shall begin with

as as in cruse of the sublimity from *Ar more jorvus ʼn the sense of heareel toe once ir all observe, that an invesKetus and mechanical causes of our passions, A he subret, gives, if they are disCaucht shine and lustre to any rules we deliver When the ear receives any simple sound, 、、、NI since rise of the air, which makes the 2, wn the opter membræious parts vibrate according Rotos and værs of the stroke. If the stroke be IN Agør N HỌC ng sucfers a considerable degree of I de stede de repealed pretty soon after, the repe

tition causes an expectation of another stroke.

And it must

be observed, that expectation itself causes a tension. This is apparent in many animals, who, when they prepare for hearing any sound, rouse themselves, and prick up their ears: so that here the effect of the sounds is considerably augmented by a new auxiliary, the expectation. But though after a number of strokes, we expect still more, not being able to ascertain the exact time of their arrival, when they arrive, they produce a sort of surprise, which increases this tension yet further. For I have observed, that when at any time I have waited very earnestly for some sound, that returned at intervals, (as the successive firing of cannon) though I fully expected the return of the sound, when it came it always made me start a little; the ear-drum suffered a convulsion, and the whole body consented with it. The tension of the part thus increasing at every blow, by the united forces of the stroke itself, the expectation, and the surprise, it is worked up to such a pitch as to be capable of the sublime; it is brought just to the verge of pain. Even when the cause has ceased, the organs of hearing being often successively struck in a similar manner, continue to vibrate in that manner for some time longer; this is an additional help to the greatness of the effect.

SECTION XII.

THE VIBRATIONS MUST BE SIMILAR.

But if the vibration be not similar at every impression, it can never be carried beyond the number of actual impressions; for, move any body as a pendulum, in one way, and it will continue to oscillate in an arch of the same circle, until the known causes make it rest; but if after first putting it in motion in one direction, you push it into another, it can never reassume the first direction; because it can never move itself, and consequently it can have but the effect of that last motion; whereas, if in the same direction you act

upon it several times, it will describe a greater arch, and move a longer time.

THE EFFECT OF SUCCESSION IN VISUAL OBJECTS EXPLAINED.

If we can comprehend clearly how things operate upon one of our senses, there can be very little difficulty in conceiving in what manner they affect the rest. To say a great deal therefore upon the corresponding affections of every sense, would tend rather to fatigue us by an useless repetition, than to throw any new light upon the subject, by that ample and diffuse manner of treating it; but as in this discourse we chiefly attach ourselves to the sublime, as it affects the eye, we shall consider particularly why a successive disposition of uniform parts in the same right line should be sublime, and upon what principle this disposition is enabled to make a comparatively small quantity of matter produce a grander effect, than a much larger quantity disposed in another manner. To avoid the perplexity of general notions; let us set before our eyes a colonnade of uniform pillars planted in a right line; let us take our stand in such a manner, that the eye may shoot along this colonnade, for it has its best effect in this view. In our present situation it is plain, that the rays from the first round pillar will cause in the eye a vibration of that species; an image of the pillar itself. The pillar immediately succeeding increases it; that which follows renews and enforces the impression; each in its order as it succeeds, repeats impulse after impulse, and stroke after stroke, until the eye, long exercised in one particular way, cannot lose that object immediately; and being violently roused by this continued agitation, it presents the mind with a grand or sublime conception. But instead of viewing a rank of uniform pillars; let us suppose that they succeed each

* Part II. sect. 10.

other, a round and a square one alternately. In this case the vibration caused by the first round pillar perishes as soon as it is formed; and one of quite another sort (the square) directly occupies its place; which however it resigns as quickly to the round one; and thus the eye proceeds, alternately, taking up one image, and laying down another, as long as the building continues. From whence it is obvious, that at the last pillar, the impression is as far from continuing as it was at the very first; because in fact, the sensory can receive no distinct impression but from the last; and it can never of itself resume a dissimilar impression: besides every variation of the object is a rest and relaxation to the organs of sight; and these reliefs prevent that powerful emotion so necessary to produce the sublime. To produce therefore a perfect grandeur in such things as we have been mentioning, there should be a perfect simplicity, an absolute uniformity in disposition, shape, and coloring. Upon this principle of succession and uniformity it may be asked, why a long bare all should not be a more sublime object than a colonnade; since the succession is no way interrupted; since the eye meets no check; since nothing more uniform can be conceived? A long bare wall is certainly not so grand an object as a colonnade of the same length and height. It is not altogether difficult to account for this difference. When we look at a naked wall, from the evenness of the object, the eye runs along its whole space, and arrives quickly at its termination; the eye meets nothing which may interrupt its progress; but then it meets. nothing which may detain it a proper time to produce a very great and lasting effect. The view of a bare wall, if it be of a great height and length, is undoubtedly grand; but this is only one idea, and not a repetition of similar ideas: it is therefore great, not so much upon the principle of infinity, as upon that of vastness. But we are not so powerfully affected with any one impulse, unless it be one of a prodigious force indeed, as we are with a succession of similar impulses; because the nerves of the sensory do not (if I may use the expression) acquire a habit of repeating the same feeling in such a manner