Science Siftings

New Zealand Tablet, 1 November 1906, Page 35

Science Siftings

By ' Volt •

. - Animal Instinct. ' -Man might often take from the lower animals "a les- ' son as to the -care of himself when ill. All sorts of animals suffering, from fever eat little, lie quiet " in dark, airy places, and drink quantities of water. When a dog loses his appetite he . knows wheret o find dog glass whicn acts .as a purgative and emetic kheep and cows, when ill, seek certain " herbs. Any animal suffering from chronic rheumatism keeps as far as possible in the sun. If a chimpanzee be -wounded" tie has been seen to stop the bleeding by a plaster of chewed-up leaves and grass. * y P iasiei 0I - Baith Currents. • r>w Ml " ,J o A> . Ha , rker read a clever paper before the Physical ■ Society describing some experiments on earth ' currents conducted at- KeY Observatory. He referred to the investigations made some years ago witt regard to the earth currents produced by electric traction schemes, an d the disturbances they cause on the " self-recording magnetic instruments kept continuously lunmng to register the variations in the declinaS and the horizontal and vertical forces Two laS earth " dred v^df bUn t ed ab °, Ut fow ieet dee P and-tfo hundied yaids apart, and connected through a Dhotngxaphvs recording volmeter of high resistance On the traces given, the effect of the trains on^the Central m ?i nn p d ,°V^ al V W F' W l lose * earest Point is about sS miles distant from Kew, was strikingly shown" ~ " " The Wishbone. . * The wishbone in birds is called, by scientists fureuia " and is m reality the union of what are in man the thT bru^o? ?ho lar ; b T CS - / fh ? Se in th ' c Wrd m^ceivJ ' crlature in its ni^l OkeS the ing lhat iilin the strS «f tiJ ,i fl ? hbl • Fe w valise the. strength ol been known to hlf.r Wirig - 'Xf '^ said that a s^ an **» oeen Known to bleak a man's- leg: by a blow nf iic special action on the other side. For this reason wp LI F iC l°' h °- ot --« ' *■&£& i/nat make our sport of breaking the wishbone possible. The World's Famous Bridges. Tach ?^nn g fp^ On , SIStS of - two lines of immense tubing; beside thP lw 1O1 l g ' ( sup P° rled by three Senate towefs w if iJ ore abutl iients. This strange bridge is 100 feet above the sea, arid weighs 11,000 tons IRS? oSh nOUSin OUS i 414 1 ¥ ara su sPcn»ion -bridge was begun in nn^ T ?f re *V haVe , been severa l London bridges. There" was fnfi * -Jf 8 r end - of . the tenth century, and another S D?Mge b acrosi S°t, In U7 l .^echSch * begS artontf