Rensselaer Republican, Volume 21, Number 29, Rensselaer, Jasper County, 21 March 1889 — SCINNCN AND INDUSTRY. [ARTICLE]

SCINNCN AND INDUSTRY.

Idaho is developing into the great lead district of the country. • „ , The flow 6f natural gas at Columbus, 0., is estimated at 1,000,000 feet per day. - ' Of the 101 geographical societies, in the world France leads with twentynine. r J In England: it is proposed taking the censuß every five years instead of evgfry ten. The population of Africa is eighteen to the square mile; in Europe there are eighty-eight lo the same space. If the water of the ocean,were to suddenly cease being compressible its mean depth would be increased by 116 feet. It is estimated that 50 per cent of gas used in thife Pittsburg mills is lost through ineffective methods and bad management. Prof. Bell says that deafness occnring n childhood is capable of complete removal by suitable instniction in special schools. Five hundred and thirty-eight million dollars is the highest value placed upon all the minerals mined in the United States any cine year.. As an example of instantaneous photography as applicable to the study .of the motion of projectiles passing through the air, four negatives were taken of a cannon ball that occupied but one-fourth of a second passing $ given space.