A Meadville, Pa., correspondent says: "We have had a real old-fashioned winter here, with plenty of snow and nearly two months of good sleighing. Mercury occasionally from 14 to 16 below zero, which will make, possibly, our peach crop a dubious one. Our city has now the benefit of natural gas, which has no sparks like wood and requires no replenishing like coal; and so our houses keep warm all the time. A good deal of evaporation of water, however, is required to keep the air in good condition for the lungs. A nice invention, self-acting, called a 'cut off is inserted in the admission pipes in the cellar, which, in case of any temporary suspension of the flow of gas from the main street pipes, shuts off all communication with the main pipes. So, there is no danger of any influx of gas except when it is desirable to have it. Two or three varieties of these 'cut offs' have been invented and patented in our city. The most simple ones I have seen are by the firm of Hazlett & Co".