| Show waltzing mite mie help in work of mine rescues the rescue squads of the mining districts are often compelled to enter mines where the air Is likely to be charged with gas that would make it impossible for human life but the presence of this gas ens Is not apparent to the nose in order to protect themselves it has been the custom tor for these men to carry a canary bird along with surgical supplies foods tools and oxygen apparatus because the bird Is quickly affected by even a small amount ot of gas and invariably warned the rescue workers of the fatal and invisible fumes in the future however japanese waltzing mice will replace the little yellow songsters song because experiments have shown that the curiously behne behaving rodents iron the orient are much more sensitive to deadly gas than cana rles arc in addition to this the mice ate aie hardler and are not often fatally stricken cn by their experience whereas tiie the birds are usually equally sacrificed they do not recover from the effect of the gas |
