Page:Popular Science Monthly Volume 88.djvu/369

 Popular Science Monthly

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��This Belt Breaks All Records

GIGANTIC conveyor - belt which has recently been installed in a California sugar refinery is said to have broken all records in the conveying of sugar. The belt is truly remarkable in size, being one thousand four hundred and forty- three feet long, thirty-six inches wide, and weighing nearly six tons.

In its operation this con- veyor continually sustains a load of sixty bags of sugar, a total weight of seven thousand five hun- dred pounds. These bags are delivered to the belt every nine seconds and are carried to their destination at great speed, as the belt niake^ twenty-six complete revolutions every eight hours.

At the close of its service this belt will have exceeded the remarkable record established by its predecessor, which carried over two billion pounds of sugar before there were any evidences of wear.

��The Largest Card Holder in the World

THE tree in the accompanying pic- ture is rightly named when it is called "the largest card case in the world" for it is literally plastered with

����A belt which is destined to carry over two billion pounds of sugar before it wears out

Dehvering Mail by Aeroplane

IN his annual report Postmaster Gen- eral liurleson has recommended the appropriation of fifty thousand dollars for the establishment of aerial postal routes. He has submitted a list of routes over which much time could be saved by delivering the mail by aero- planes instead of by railroad.

��This is where you leave your card, with thousands

of others, to record your visit to the famous California

redwoods

��thousands upon thousands of cards of all kinds.

The tree is one of many in the fa- mous redwood grove of big trees in the Santa Cruz mountains and is about eighty miles from San Francisco. Each year finds the tree covered with a fresh coat of calling cards, personal cards, business cards and other cards too nu- merous to mention. Not only is the outside made use of but the interior, which, due to some forest fire in the past is hollowed out into a large room, is thickly covered with pasteboards.

The exposition at San Francisco at- tracted more people to the grove than usual and a close observation will reveal the cards of foreign ambassadors, ex- presidents of the United States. Sena- tors and so on down to the scrap of pa- per placed on the tree by a passing "knight of the road."

Although there are dozens of trees many times larger than this one. it is the onlv one used as a card-case.

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��'Hl-'N the new water system of Madrid. Spain, is completed, it is estimated that the supply will exceed two hundred and six tliousand gallons per minute, and that, in addition, there will be a hydro-electric production of twenty-one thousand horsepower.

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