Alaska sentinel., 1906-10-11
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packing water pipes. consists of very small ribbons of lead. cut by patented machinery in lengths of three feet. Hemp or yarn Is first pressed into the socket, and then the strand of lead wool is twisted In and well caulked at each turn until the whole space is tight ly packed with a mass of lead It Is claimed that the joint Is stronger and more satisfactory than when closed by the usual troublesome method of run ming In molten lead.
 In the tests recently made over coun- try roads between New York and New Haven to determine how far two gal Ions of gasoline are capable of driving an automobile. slxty-tive machines of many sizes and types were used The best performance was by tour-cyln- Ger machine of twelve horse power, which ran elghty-seven miles. Another machine of the same make and pattern ran only fifty eight miles. The Iron Age points out that a weight of 1900 pounds was moved eighty y-seven miles on two pounds of gasoline, which means a ton mile for half a cent.
 One of the queerest of odd creatures Is the mud skipper or jumping fish of the large rivers of India and the neigh boring sea coasts. At ebb tide these little fishes leave the water to hunt for tiny crabs. files, etc. and their strong pectoral and ventral fins, aided by their tall, enable them to move about easily and to climb upon trees. grass and leaves. With their huge eyes, seeming to project far out of the sockets, they can see as well on the land as In the water. They progress In short quick rear third of the body to the left and suddenly straightenlng 1t. In color they are usually light brown with dark bands, though they sometimes appear light green. They are easily caught and are much used ln Burma for live bait.
 Asbestos porcelain, the new material of Garros, European chemist, Is claimed to have the desirable properties of true porcelain and certain advan- tages In addition. As asbestos fbers are very thin, with diameters between one one hundred thousandth and one two hundred thousandth of an inch, they can be crushed to an exceedingly fine powder; this Is made Into a paste with water. and after repeated knead- ings the mass Is poured into molds. When the objects thus shaped are heat ed in crucible to TOO C., a trans parent product like ordinary porcelain is obtained. If the powder has been washed with sulphurc acid, a porous asbestos porcelain of pale yellowish or white color results when the nodded articles are kept Tor eighteen hours at 1900 c.
 It occurred to Prof. R. W. Wood re- gently to try to represent by under water photography the appearance of the out-of-water world as viewed by the eyes of fish. The results are very curious, depending on the refraction of light by water For Instance, with box filled with water, having a photo graphic plate at the back and a pin hole covered with glass at the front, the situation of fish looking out of the side of an aquarium is initiated. With such an arrangement Prof. Wood found that all three sides and the complete ceiling and floor of room could be photographed at one view. Placed at point where three streets meet at a right angle, It gave view looking down all three streets, including the ground up to the base of the tripod, and the sky from the horizon to the zenith. From a balloon such a camera would photograph the whole visible surface of the earth out to the horizon on all sides.