He conducted me into a hall of a middling size, and not much adorned1, where I was struck with a sight that raised my astonishment2. I saw, out of a window, a sea which seemed to me to be about a quarter of a mile distant. The air, full of clouds, transmitted only that pale 94light which forebodes a storm: the raging sea ran mountains high, and the shore was whitened with the foam3 of the billows which broke on the beach.
By what miracle (said I to myself) has the air, serene4 a moment ago, been so suddenly obscured? By what miracle do I see the ocean in the center of Africa? Upon saying these words, I hastily ran to convince my eyes of so improbable a thing. But in trying to put my head out of the window, I knocked it against something that felt like a wall. Stunned5 with the blow, and still more with so many mysteries, I drew back a few paces.
Thy hurry (said the Prefect) occasions thy mistake. That window, that vast horizon, those thick clouds, that raging sea, are all but a picture.
95From one astonishment I fell into another: I drew near with fresh haste; my eyes were still deceived, and my hand could hardly convince me that a picture should have caused such an illusion.
The elementary spirits (continued the Prefect) are not so able painters as naturalists6; thou shalt judge by their way of working. Thou knowest that the rays of light, reflected from different bodies, make a picture and paint the bodies upon all polished surfaces, on the retina of the eye, for instance, on water, on glass. The elementary spirits have studied to fix these transient images: they have composed a most subtile matter, very viscous7, and proper to harden and dry, by the help of which a picture is made in the twinkle of an eye. They 96do over with this matter a piece of canvas, and hold it before the objects they have a mind to paint. The first effect of the canvas is that of a mirrour; there are seen upon it all the bodies far and near, whose image the light can transmit. But what the glass cannot do, the canvas, by means of the viscous matter, retains the images. The mirrour shows the objects exactly, but keeps none; our canvases show them with the same exactness, and retains them all. This impression of the images is made the first instant they are received on the canvas, which is immediately carried away into some dark place; an hour after, the subtile matter dries, and you have a picture so much the more valuable, as it cannot be imitated by art nor damaged by time. We take, in their purest source, in the luminous8 bodies, the colours which 97painters extract from different materials, and which time never fails to alter. The justness of the design, the truth of the expression, the gradation of the shades, the stronger or weaker strokes, the rules of perspective, all these we leave to nature, who, with a sure and never-erring hand, draws upon our canvases images which deceive the eye and make reason to doubt, whether, what are called real objects, are not phantoms9 which impose upon the sight, the hearing, the feeling, and all the senses at once.
The Prefect then entered into some physical discussions, first, on the nature of the glutinous10 substance which intercepted11 and retained the rays; secondly12, upon the difficulties of preparing and using it; thirdly, upon the struggle between the rays of light and the dried 98substance; three problems, which I propose to the naturalists of our days, and leave to their sagacity.
Mean while, I could not take off my eyes from the picture. A sensible spectator, who from the shore beholds13 a tempestuous15 sea, feels not more lively impressions: such images are equivalent to the things themselves.
The Prefect interrupted my extasy. I keep you too long (says he) upon this storm, by which the elementary spirits designed to represent allegorically the troublesome state of this world, and mankind’s stormy passage through the same: turn thy eyes, and behold14 what will feed thy curiosity and increase thy admiration16.

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1
adorned
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[计]被修饰的 | |
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2
astonishment
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n.惊奇,惊异 | |
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3
foam
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v./n.泡沫,起泡沫 | |
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4
serene
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adj. 安详的,宁静的,平静的 | |
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5
stunned
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adj. 震惊的,惊讶的 动词stun的过去式和过去分词 | |
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6
naturalists
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n.博物学家( naturalist的名词复数 );(文学艺术的)自然主义者 | |
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7
viscous
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adj.粘滞的,粘性的 | |
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8
luminous
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adj.发光的,发亮的;光明的;明白易懂的;有启发的 | |
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9
phantoms
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n.鬼怪,幽灵( phantom的名词复数 ) | |
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10
glutinous
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adj.粘的,胶状的 | |
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11
intercepted
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拦截( intercept的过去式和过去分词 ); 截住; 截击; 拦阻 | |
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12
secondly
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adv.第二,其次 | |
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13
beholds
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v.看,注视( behold的第三人称单数 );瞧;看呀;(叙述中用于引出某人意外的出现)哎哟 | |
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14
behold
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v.看,注视,看到 | |
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15
tempestuous
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adj.狂暴的 | |
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16
admiration
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n.钦佩,赞美,羡慕 | |
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