| Show new domestic animals have been added by modern science to be of aid to man how important have become the new domestic animals added by modern medical and biological science to tile the short list of creatures domesticated by mankind in previous ages says dr E E free Is indicated by a recent warning of the wistar institute of philadelphia concerning bogus strains of wistar white rats believed to be on sale by unscrupulous dealers the number of guinea pigs used as test animals in medical laboratories uD undoubtedly exceeds by many times the number of wild guinea pigs ever alive at once in their native south america the tiny vinegar eels sometimes seen under a microscope in old vinegar have been domesticated in at least one biological laboratory at yale tale there is a domesticated strain of the animalcules animal cules called para mecia often found wild in ditch water prof S 0 mast of johns lie P kids university lias has domesticated amebas amoebas another lowly creature of ditches and ponds the small crablike creatures called have been domesticated both as food for aquarium fish and as material for blo bio logical experiments the fruit fly called Is domesticated in scores of laboratories where it Is used lo in studies of 0 heredity A new dew medical procedure Is the treatment of certain bone diseases by living maggots of another fly so that these too have joined the bees as domesticated in cecis the wistar institute has domesticated for experimental purposes the opossum and the mexican salamander or axolotl asolo tl the chief laboratory animal however Is the white rat so useful that pedigrees pedigreed grees are kept and purebred strains established just as Is done by breeders bleeders bre eders of pedigree ds horses or dogs pathfinder finder magazine |
