LISTENERS IN

Evening Post, Volume CV, Issue 142, 16 June 1923, Page 14

LISTENERS IN

i'SAPPENINGS -ENT 'THE' ANIMAL

KINGDOM.

The air was full of talk and music' tountless centuries before man invented ijivireless broadcasting. Any number of jpther creatures whom we never hear and never cair hear are" busy talking to 'each-other-{writes--" A Naturalist" in %he - L0nd0n..... "Evening News"). All fecund. comes, to. the . human ear in the. form of vibrations. Our ear is so constructed that it can catch only a range of "seven octaves of sound, constituting Irom 30 to 30,000 vibrations a second. Dogs, cats, and. many other creatures can hear a lot of sounds that we miss. 2?ake .your- dog out for a walk by the side 0f,.a...w00d at night, and see how he keepsrp,ricking;"TipjHs ears as he hears ioises-'too indefinite !for the human ear to catch. ."Watch" two cats in a room. .One, will suddenly cock, an ear, turn its head, and listen. A moment later it jjvill ■ suddenly ' .get up and".-'cross the joom. For some reason a Woman's ear ca.n catch a higher-pitched sound than a man's.-' A---woman can often hear a bat's highS"note',,,'for instance,, that is inaudible So a* "iriSh. Spiders "are constantly making sounds, arid listening to sounds, that are inaudible to us. Lurking out of sigh in their lair they eari tell just .what insect is approaching and something of its strength and emotions— whether it "is fresh or .th-ed, angry, or good tempered. . -Some .of this "wing talk" even our. clumsy: ears -can catch—, but not much of it. A bee's wing normallyl^BStes'about,44o .times a second, matdn^'a musical note A, If the bee is tired it makes the note. E, with. 330 vibrations a.'seeoucr." :A lionsefly s.note, too/is. E/'widi.SSO pei:;secornlvibraliojis. Spiders "and Ecorpions show every . sign of rage iE you "JMin" nature's wireless by twanging a tuning-fork in their yicdnity.