A Good Kerosene

According to Prof. J. Lawrence Smith good kcrosonn should have the following characteristies : First, the color süould be wliite or light yeUow, with a blue reflection. Second, the odor shovild be íaint and not disagreeable. Third, the spedfiö gravity, at 60 deg. Fahrenheit, onght not ïo be below 0.795 nor above 0.84. Fonrth, vhen mixed with an equal vohime of sulphnrio acid of the density of 1.68, tho color ought not to become darker, lmt lighter. A petroleum thnt sutisfícs nll these conditiong, and possesses the proper flushingpoint, may be regarded OS pure and