Page:Popular Science Monthly Volume 92.djvu/763

 Popular Science Monf/ili/

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��Tilting End-Pieces for Your Eye Glasses

RE you one of those unfor- tunates who are compelled to go through life with spec- tacles before their eyes If so, a clover little device recently patented, 'a ill bo of interest to you. The device consists of a fric- tion hinge connecting the end-pieces with the lenses in such a manner that by a slight turning of the frame of the glasses the lenses may be brought into any angle rela- tive to the eyes and held in that po- sition as

���long as it is desired. The new end-pieces are simple and have no parts that will get out of order.

��Remarkable Pliotoftraph of an Actual Battle Scene

ONE of the most remarkable war photographs taken by the official photographer of the British army in France is reproduced in the ac- companying picture from the excellent enlargement, eight by fifteen feet in size, which was recently placed upon exhibition. This picture, probably the largest war photo- graph ever made, shows a wide portion of the battle- field during the actual ad- vance of the Canadian troops at Vimy Ridge, on the morning of April 9, 1917. The smoke in the background is produced by the counter-barrage of the Germans, which was par- ticularly aimed at a line of tanks. The Canadian curtain of fire has already swept over the battlefield and is no longer visible.

��An adjustable spectacle rim for tilting the lenses to a desired angle

���Dderwood and Underwood

This is probably the biggest enlargement ever made of a photograph. It shows the Canadian advance at Vimy Ridge and measures eight feet in height and about fifteen feet in width

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