The Arkansaw traveler., 1889-06-29
COMPILED FOR THE ARKAKsAw TRAvKLKR-
 SCIENTIFIC MISCELLANY.

European manufacturers are producing paper as tough as wood or leather.
 Mucous membrane from the mouth has been transpanted successfully to the upper eyelid, the entire graft living and giving perfect results. | MT. W. H. Dinds, F. R. Nj. S., finds that pressure of pound per square foot is caused by a wind of little more than seventeen miles hour.
 NJ. Chervn shows that eight per cent of mar rages in France are sterile, twenty-five per cent yield one child, and loo families average only 259 children.
 | Dr. J. A. Cones records the case of a man who was observed to be sweating sixteen hours after death, continuing to prespire freely for at least eight hours.
 | Prof. Renzi, of Naples, reports that numerous phy ysicians have successfully treated tetanus by rest. The of the patient are closed with wax, and he is placed in perfectly dark room far from any noise Liquid food is given, that mastica- tion Is not necessary.
 SoArsToNE Naturalization has been called to the little appreciated value of soapstone as a protective against the dsintegrating influence Of the atmosphere It has long been used in China to keep sandstone and similar materials from deterior ation, and pershable obelisks have been preserved in that country for many centuries by paint made from powdered soapstone. The substance Is said to be especially adapted a paint to prevent the corrosion of iron and steel.
 1 POTATOES IN SURGERY.-The eating of large quantities of potatoes has been tried a means of relief from foreign bodies that have been acci- dentally swallowed The whole intestinal canal is thus dilated approximately and the foreign body is carried through Prof Billroth and Dr. Sazer affirm that many surgical operations might be avoided in this way, such articles as a twenty gramme weight, set of artificial teeth and needle having been successfully removed. 1 INTERMITTENT SENSE OPERA rIoNs.-The tick of a watch withdrawn gradually from the begins to be heard by turns, distinctly and ndistinctly, then times of silence alternate with the sound. Nj. Couteux records analogous experience in the case of vision. He could not determine whether & distant windmill, with four vanes, was slowly moving, for, of the three vanes projected against the sky, he saw now one, now another, the inter- mittent failure of vision preventing him from observing two successive positions.
 SILK FROM CorToN.-The new artificial silk of Nj. Chardonnet Is likely to prove a textile fabric of value if its present inhammability be overcome. The material is prepared by treating cotton with a mixture of nitric and sulphuric acids, for the making of gun cotton, then dssolving in 6 mixture of alcohol and ether to which Is added some per- chloride of iron protochoride of tin and tannic acid. The solution is run through small tube or | fine holes into water slightly calculated with nitric acid. The fine fluid flament immediately solidiies, forming thread very closely resembling silk, and equally strong and elastic. Any desired cooriDg- matter may be added to the solution. | PHOTOGRAPHS or ANIMAL MOTIONs.-Since 1878 MT. Eadweard Muy bridge has been engaged in phOtographing animals in motion his later searches being aided by grant of $3O,000 from the University of Pennsylvania His perfected appa- ratus consists of three batteries of twelve more cameras each, arranged that an electric current opens the cameras excessively, with intervals of about thrteth of second, giving exposures of one- five thousandth of second. The pictures are now photo engraved, and a set of no less than 7Sl plates has been made-each containing 6 series of from twelve to thirty pictures representing cessiye instantaneous phases of movement. About 500 of the plates represent men, women and child ren, nude and semi -nude in successive phases of walking, running, jumping, dancing, bathing, fencing, wrestling, boxing, and other exercises. The rest of the plates give similar studies of the various gaits of horses, asses, mules, oxen, deer, elephants cames, raccoons, apes sloths, and other quadrupeds, as well as of the flights of birds.