(_For The Mirror_.)
Persons desirous of ascertaining the true state of their lungs, are
directed to draw in as much breath as they conveniently can; they are
then to count as far as they are able, in a slow and audible voice,
without drawing in more breath. The number of seconds they can
continue counting must be carefully observed; in a consumption, the
time does not exceed ten, and is frequently less than six seconds; in
pleurisy and pneumonia, it ranges from nine to four seconds. When the
lungs are in a sound condition, the time will range as high as from
twenty to thirty-five seconds.