ickness, and is adapted for surfacing either hard Xbe Velocity of Light. The following are commended for the colors most fre- or soft wood, and will be found of great utility in any wood- M. Fizeau, whose name as an investigator of light is well quently wanted for stamping purposes: working… … ble. It obviates the necessity for AUTOMATIC FIRE EXTINGUISHER. turned out of little practical value, water and the damage frequently since it was impossible to produce incurred thereby to the goods. To make the compound self- half tones by its means in any degree of perfection; of ammonia, and add…
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