Show SCIENCE AND DISCOVERY What Inventors are Doing New Things in Mechanism Etc Two important inn ovations celebrate their jubilee this year One is the galvanic gilding gild-ing and silvering method devised by the Swiss chemist M August do la Rive in the year 1S41 for which in the course of the following twelve months he received the Moutyon prize of 3003 francs from the Adademie de Paris M Rives process of Imparting to common metal a firm gold or silver coating has entirely supplanted the oldfashioned pyritis method which owing to the noxious mercurial vapors engen dered materially injured tho health of tho artisan The second invention is that of steel facing copper plates the outcome of the ingenuity of a Frankfort professor Herr A Bottger Ilrlnls Under tho Heel The Swedish shoemakers have invented a spring that is designed to be placed immediately im-mediately under the heel inside the shoe in order to give elasticity to the step and make walking more easy The spring is attached to one end of a thin strip of natal the other end of which is screwed to the solo of the shoe These springs can be fastened to any shoe and in addition to the added ease in walking it is claimed that the rise and fall of tho Lool on the spring causes ventilation of the shoe and prevents sweating of the feet Opera Spectacle A correspondent whoso enthusiasm about optical possibilities is often only equaled by the delightful flights of his imagination im-agination sends the London Optician a sug gestion He says With the perfection I to which the making of aluminum is now brought and the popularity of small opera glasses why not construct opera glasses mounted on a spectacle frame Provide I the size is small object say glasses half an inch in diameter and with six lenses only the glasses might be worn without any discomfort upon the nose during the whole of a theatrical performance Tho sight ot an audience equipped with spectacleopera glasses might at first seem ludicrous Bu use is everything 1 A Typewriter for Bookwork A Kansas man has invented a typewrite which will straddle acconotbooks orrecon books of any size and write directly on the fcago beneath It will also do ordinary work but is especially adapted for county clerks offices and will doubtless result in i much saving of time and space in record u lug deeds and other legal documents Written Writ-ten with the pen the record books in county clerks offices are almost too bulky to bo manageable Large Gas Engines A 500horsepower gas engine which consumes gas to the equivalent of only 500 grammes 10123 pounds of coal per effec tive horsepower per hour was recently installed in a Marseilles works Similarly favorable results nave been obtained with a 100horsopower engine which is in operation in Rouen SCR US In asteel mill at Newburn England is a machine that will shear an ingot of steel thirty inches in width and twelve inches in thickness A mighty foot holds the ingot in place and the knife descends and strips off a piece as a boy cuts candy Hy draulic power is used and tho cut can be made about three seconds I A company has been formed in Germany Ger-many to erect works for the production of the new explosive dahmenito which is especially es-pecially adapted for mine use having more power than dynamite at the same time being perfectly harmless under ordinary or-dinary circumstances A florist has succeeded in producing blue and green roses by an extremely simple sim-ple procoss In order to obtain these ro sults he takes a white rose bush and waters it throughout the winter with a solution Prussian blue if blue roses are waited and with a solution of sulphate of copper if the flowers are desired of a green color I Umbrellas made of paper are one of the latest proaucts of French ingenuity The I paper is toughened and rendered waterproof water-proof by being treated to a solution of gelatine gel-atine with bichromate of potash Up to the present time there have boon over 1700 applications for space at the Chicago fair Labor can change five pounds of pig Iron worth five cents into 110200 steel watch springs worth 175 per dozen 1507083 |