Hygienic Notes
(Page 3 of 10)

"TAKING COLD."

This vague "household word" indicates one or more of a long varied train of unpleasant affections nearly always traceable to one or the other of only two causes,—sudden change of temperature, and unequal distribution of temperature. No extremes of heat or cold can alone affect this result: persons frozen to death do not "take cold" during the process. But if a part of the body be rapidly cooled, as by evaporation from a wet article of clothing, or by sitting in a draught of air, the rest of the body remaining at an ordinary temperature; or if the temperature of the whole be suddenly changed by going out into the cold, or especially by coming into a warm room,—there is much liability of trouble.

There is an old saying,—

"When the air comes through a hole,
Say your prayers to save your soul."

And I should think almost any one could get a "cold " with a spoonful of water on the wrist held to a key-hole. Singular as it may seem, sudden warming when cold is more dangerous than the reverse: every one has noticed how soon the handkerchief is required on entering a heated room on a cold day. Frost-bite is an extreme illustration of this. As the Irishman said on picking himself up, it was not the fall, but stopping so quickly, that hurt him: it is not the lowering of the temperature to freezing point, but its subsequent elevation, that devitalizes the tissue. This is why rubbing with snow, or bathing in cold water, is required to restore safely a frozen part: the arrested circulation must be very gradually re-established, or inflammation, perhaps mortification, ensues.