Salt Lake Telegram | 1923-07-15 | Page 4 | Fireside Science

Fireside Science Br R-ansot7aa Sutton Cesyilakk 1S IK. T. Bvealg world). Proa lukl!ekla Co. SltU TTAAITf lit MAMMAL. Oaa aeed sot be a soologlst te ee able te distinguish ths four great groups of mammal which hava developed de-veloped along difforeat llnea The carnlverea or ftesh-eatera such aa ogs, cats, bear, scale, would asver be tsksn for graslng animals; thslr carnivorous character la batraysd by their tuk aad clans. Ths ungulates, er hoofed aalmala. Including horsss, cattle, dear, hog, rhtnocoroa aad hlppopotamua, which ubalat on vegetation and depend upon their hoof nd hrn nd fleetaoe for protection agalaat the aaralvorea, composs th ooad group. la the third group are Included all the land animals which took to living liv-ing In the water, such as scale, wsl-ruaee, wsl-ruaee, whale ad a cewa, ana of which would b mlstaksa for a car-alvorou car-alvorou or a hoofed animal. Thea come th prlmta (lmur. menkers. apea and man), wkoee rlee in the aaimal kingdom haa reeulted. aot from victories won with tusks and claws, er witk hoofs aad horns, or by taking to tha water, but by reaaoa ef their superior bra) a ability. abil-ity. Truly I different directions, these great groups hsvo differentiated. One of the aurtrlta peculiar to hoofed animal I ."cbawlng th cud." Cattle, a vryoac knowa grata In th paature ky day and com In ftt milking time chwlng thlr coda. Th ud conatat of undlgaeted trees, etorsd la a capacious cham-ir cham-ir of ths stomach called th paunch. After filling the paunch, graaero find a ahaded piece, ralee the etored food te ihelr mouths and masticate it et leisure. The cud-chewing cud-chewing heblt was formed by the aaceatora of modera rumlnaats nt a time whea graslng meant danger; grace had to bo gathered quickly aad In fear of the carnivore There waa not time enough to masricate tt la the opsa. Sheep, g-oat. deer aad all kiada of cattle art atlll alavaa of that ancient habit. It I popularly believed that. If aa animal loee Ita cud. It dlea Oaiy recently re-cently a cattleman aald: "One of my dairy cow will probably die tealght. She coughed up her cud aad 1 up-poe up-poe there' nothing we eaa do to v hr." W found hr "bleated" from over-feeding oa talated alfalfa, alfal-fa, but a veterinary hr aad. desplt th loss ef hr ud. ah I till allv. Not th losing of a ud eo much aa th sick a aes. wfclrh cue cattle te loee their cud., prove fatal. It la aaaovlag aae. thrfore, Inlarloua te milk cows te disturbed while chewing Ihelr cud, and dalrymaa usually allow the cowa to chsw la peace for about a kur before beglaalag the sail a -lS Hlberaatloa la aaether qaeerdratt. eharactrltlca ef all hlads f rtll and alee ef saaa klnda otf mam-male mam-male . Th habit f eleeplag all wleter wuld aeVer have originated among warm-blooded m am mala, for Ihey have a four-chambered heart aad a elroolatory oyatem which heep th blood et ea va tao-aperature. at laaat wlthla a fsw degrees of II I the normal temperature ef saajn a-taj-lan brood. With reptllee II I different: hav. ing nty a 1hr-chamared aart. the tempOTtur-f thtr blood rtes or fall with the waac her. They cannot endure the eudden rhangee ef wintry climate wit the approach ap-proach ef eead weather, they seen at aom shelleved place, g te aieop aad remain asleep till the following prlng Pood Ib not neceesary, because be-cause They a. aot aspead aay eaer glee have the low emot required fo heep thesr-barely breathing. Tha heart ecarcely beats, th dletlv proeems ara at a eteadaull, tha musclss ara relaxed aad Ilka -oaaked fire" III buraa lew. If fuel be aeeded te keep the embere allva hibernating aalmala draw tapoe th wit re fer. takea ea durlagh the preceding aummer. The kiberaatlag habft. white Krely reptlllaa la Its arlgia, has n Inherited by many epcle ef atammala ef which the kedgshog is e fsmlller example Aat-e.tsra, he era. dormare, bsta msrwtala end )erboaa are all hibernating -mammal. It ta the eheapeet knowa waa et getting through the wis lor.