The speculation in real estate caused by this discovery has been perhaps without parallel in the history of the State, and, as is usual in such cases, it is now in a lull, waiting for the promised developments. But these have been almost as marvellous as the speculation. Findlay was a sleepy little village in the black swamp district, one of the most backward regions of Ohio. For many years there had been surface indications of gas, and there is now a house standing in the city which used gas for fuel forty years ago. When the first gas-well was opened, ten years ago, the village had about 4500 inhabitants. It has now probably 15,-. 000, it is a city, and its limits have been extended to cover an area six miles long by four miles wide. This is dotted over with hastily built houses, and is rapidly being occupied by manufacturing establishments. The city owns all the gas-wells, and supplies fuel to factories and private houses at the simple cost of maintaining the service-pipes. So rapid has been the growth and the demand for gas that there has not been time to put all the pipes underground, and they are encountered on the surface all over the region. The town is pervaded by the odor of the gas, which is like that of petroleum, and the traveller is notified of his nearness to the town by the smell before he can see the houses. The surface pipes, hastily laid, occasionally leak, and at these weak places the gas is generally ignited in order to prevent its tainting the atmosphere. This immediate neighborhood has an oil-field contiguous to the gas, plenty of limestone (the kilns are burned by gas), good building stone, clay fit for making bricks and tiles, and superior hard-wood forests. The cheap fuel has already attracted here manufacturing industries of all sorts, and new plants are continually made. I have a list of over thirty different mills and factories which are either in full operation or getting under way. Among the most interesting of these are the works for making window-glass and table glass. The superiority of this fuel for the glass-furnaces seems to be admitted.