People's Pilot, Volume 6, Number 25, Rensselaer, Jasper County, 10 December 1896 — Thermometers. [ARTICLE]

Thermometers.

At times of severe frost many persons not skilled in the use of thermometers report remarkably low temperatures. These are often due to the tbermometrio liquid having partly evaporated from the main ooiumn and condensed at the end of the tube farthest from the bulb, the thermometer then reading just as many degrees too low as there are degrees of spirit at the top of the tube. Good thermometers are just as liable to this error as oommon ones, and therefore every one using a spirit minimum thermometer must be on the alert. Generally the owner oan restore the thermometer without sending It back to the maker. Grasp the thermometer firmly, resting a finger on the tube so that there be no vibration, and, holding the bulb downward, give several strong, pendulous swings. This will usually send the spirits from the top and send the index into the bulb. Stand the thermometer bulb downward for an hour, then reverse it and very gently shake the index ont ojf the bulb and let it slide to the end of the ooiumn, when the thermometer will be as good as new.—New York Ledger.