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Story of the Heavens, 2nd edition, p. 525, et seq. A series of researches made by Zöllner, of Leipzig, led him to assign to the light-reflecting capacity of the full-moon a result intermediate between that obtained by Bouguer, which gave a brightness equal to 1/300000 part of that of the sun, and of Wollaston, which gave 1/801070 part.

Through these observations we grow aware of light's faculty of communicating simultaneously to space as a whole, and to each point in it, a potential image of the light-reflecting object.

He was on the step, she was on the pavement: so that he looked down at her, with the sodden, light-reflecting slope of Duck Square for a background to her. "Oh! I'm all right. Well, you'll come to-morrow afternoon?" "No, you aren't all right. You've got a cold and you'll make it worse, and this isn't the end of winter, it's the beginning; I think you're very liable to colds."

I did not resist, I yielded; I accepted. I was already in disgrace with Aunt Constance as well be drowned in twelve feet of water as in six! So we drove rapidly away in the brougham, through the miry, light-reflecting streets of Hanbridge in the direction of Knype. And the raindrops ran down the windows of the brougham, and in the cushioned interior we could see each other darkly.

It was a moment at which to understand the jewelled imagery of the Seer of the Apocalypse. Jasper, jacinth, chalcedony, emerald, chrysoprasus, were suggested by the still bosom of the lake, towered round by light-reflecting mountains.

This shows that each point in space filled with light is the bearer of an optical image, contracted to a point, of the entire world of light-reflecting objects surrounding it. All we do with such a camera is to select a particular image and bring it to separate visibility.

Curiously enough, the asteroid which appears brightest, and which it would naturally be inferred is the largest, really stands third in the order of measured size. This is Vesta, whose diameter, according to Barnard, is only 239 miles. It is estimated that the surface of Vesta possesses about four times greater light-reflecting power than the surface of Ceres.

Within this cone the light carries the image across the space stretching in front of the light-reflecting objects up to the point where the image becomes visible by being caught on the back wall of the camera. Thus in every section of the cone the image is present in its totality even in the very apex of the cone.

It was a room to live in and laugh in. The wood-work was white-enameled; the walls covered with gray Japanese paper. There were no portières between living-room and dining-room and small hall, so that the three rooms, with their light-reflecting walls, gave an effect of spaciousness to rather a cramped and old-fashioned apartment. There were not many pictures and no bric-

'Good! he muttered, and at that very moment he was shot through the window into the thin, light-reflecting mire of the street. Enormous and strange beasts menaced him with pitiless hoofs. Millions of people crowded about him. In response to a question that seemed to float slowly towards him, he tried to give his address.