OCR Text |
Show mr' J- . AjL 8IXTH 8ENSE IN BIROS. gt Experiments with Carrier PlQeoni a?,' Prove Itt Possession. I 1 Although birds ore not ptaced near J r the summit lino of evolution, their f ability to fly Rives them advantages over nearly all tho mammalia. Their I mysterious power of changing tholr polarity or weight, In order to dlvo , In water or fly, has been often dls cussed, and tho almost Incredlblo velocity ve-locity of tholr motion when migrating, Bomctlmc3 nrtiountlng to four miles a mlnuto for vast distances, has no parallel par-allel among othor animals. A series of careful trials with carrier car-rier pigeons shows apparently without doubt their possession of a highly developed de-veloped sense of direction. In twenty minutes tho first bird, dispatched at 10 p. m., reached Its roost, n dlstanco of seventeen miles bolng traversed. Half of tho number arrived before midnight and tho remainder followed In a few hours. |