This picture is worthy of all the enthusiastic praise so liberally bestowed by competent critics. No picture is better known than Leonardo da Vinci's "Last Supper," millions of copies of which have been circulated in engravings, oil paintings, and by photography. We find the original in the Dominican monastery, where the artist painted it upon the bare wall or masonry of a lofty dining-hall.

Epicarp, do. do. do. 1 %. 4. Endocarp, do. do. do. 1 1/2 %. 5. Testa or Episperm, do. do. do. 2 %. 6. The figure represents the longitudinal cut of a grain of wheat; it was made by taking, with the aid of the microscope and of photography, the drawing of a large quantity of fragments, which, joined together at last, produced the figure of the entire cut.

The schooner will probably be here about a week. Mr. Keytel had lunch with us. It has been arranged for him to have his meals with us and to sleep at the Repettos' who have a larger house. He is an interesting man with many hobbies, being interested in photography, birds, flowers, fishing, horns, and curios.

'You're in with a queer lot of people, it seems to me. 'Oh, Denbow is all but a gentleman, I assure you. He was educated at Charterhouse, but made a fool of himself, I believe, in the common way. But about his business. I've seen a good deal of it, going in and out, and talking with them, and I know as much about photography as most amateurs you'll admit that, Rolfe?

This overflowing from her great and closely-occupied area in Memorial Hall, hard by, indicates the wealth of France in art. She is largely represented, moreover, in another outlying province of the same domain photography.

The recent discovery and use of the X-rays has assisted surgeons in locating foreign substances and in diagnosing disease. THE SPECTROSCOPE: PHOTOGRAPHY. In connection with the phenomena of light, the spectroscope, by which the chemical elements entering in the composition of the sun and of other heavenly bodies are ascertained, is one of the marvels of the age.

In a few years commenced the epoch-making work of Campbell, in the most refined and difficult problem of observational astronomy, that of the measurement of the motion of stars to or from us. Through the application of photography and minute attention to details, this work of the Lick Observatory almost immediately gained a position of preëminence, which it maintains to the present time.

Early in September of 1911 my brother Emery and I landed in Green River City, Wyoming, ready for the launching of our boats on our long-planned trip down the Green and Colorado rivers. For ten years previous to this time we had lived at the Grand Canyon of Arizona, following the work of scenic photography.

But we had been privily told of another further down the valley, at the Sha'b el-Harr; and, although we much wanted a bottleful for photography, we determined to run the risk. The result is curious, showing how jealously water-secrets are kept in these lands.

"'You know, he said, 'that objects too small to be seen by the microscope, because smaller than der amplitude of der shortest wave of visible light, can be seen when exposed to der ultraviolet light der dark light beyond der spectrum? Und you know that this light is what acts der most in photography?