Show waltzing mite help in n work of mine rescues rescued the rescue squads of the mining districts are often compelled to enter mines where tile the air Is likely to be charged with gna gas that would inako it impossible for or human life but the presence orthis of tills gas ignot liV apparent to the nose in order to protect themselves it has been the custom 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 ft a small amount of gas and invariably warned the rescue workers of tho the fatal anti and invisible fumes in the future however japanese waltzing mice will vill replace replica tile little yellow songsters song because experiments have shown that flint the curiously behaving rodents froin the orient tire are much sensitive to bendly pus gas than chinn canaries tire are in addition to this tile the mice are arc hardier tind are not often fat fatally tilly stricken by their experience whereas the birds are usually sacrificed they do not recover front from tile alio effect of the gas |