The Arkansaw traveler., 1884-03-08
.e'msi1sd fer Zze Ark1zsese yyaYsi<, SCIENTIFIC MISCELLANY

ne French association for the ,5 vanceinent of science has received b.
 quest of sco GOO. of which the in,eres. - 'o encourage research concerning the s,. uquiiy of man.
 An English naturalist asserts tna,>oa
 hedgehog cannot be poisoned. ne me,
 siryehnine, arsenic nor prussic acid b.T.
 ing any effect upon it. IL eats ad8e-s
 regardless of ther venomous fangs.
 The Swedish government. ever re.s,,
 10 extend scientific aid 10 the indu,,,ss
 of the country, proposes es,abllshir.
 station In the north of Sweden for sr~
 study oi the native plants and the q s-
 eases Of crops in that section.
 Stausiies show that blindness IS s,e,Fi.
 ny decreasing m Great Britain. I,
 thought that the decrease may be fa.,I,,
 attributed 10 improvement, in the ,ury,=s,
 treatment of eye affections, and te he
 diminished prevalence among eh,,dfer
 of smallpox.
 Dr. Motfai. In a lecture 4, t;l.sr..
 mas suggested chemical means of ,r.rz ing me voice. He considers tha, ,oe
 beautiful vocal tone of Italian peoplr m some manner due to the presence n. peroxide ot hydrogen Tn the ar and d>v ot Italy. and has shown experlmen;, ,s "hieh the inhalation of chemical I'm,
 ia,ion of the Italian air has tendel Ii, produce in individuals fuil, clear ,.-- and mellow tone ofvolce.
 The copper-Sorkers of the Fr.,-s village of Ddrfort inhale for twelve hon daily an atmosphere laden with canne. dust, and their skin and ha,r become s;. soiuted with copper. while the metal car De detected m their secreuons and z cre'ions, and after death in their bonrs let, according 10 a repor, by TWO ,r. ves'lgators to the French Academy n. sciences, the copper appears to have r. innuence upon the health of these peo. Pse. They neither suffer from speciaf trade diseases, nor are they .ro,ec.e,' against cholera, typhoid fever or o.be, affections
 A remarkable instrument is in ,.ss among the natives of .he Cniloe jslards according 10 description given |, Baron Maclay to the l.innean S,c,e,, = New South Wales. l, consists merely O, the shetl o' species of crab. ba, serYe. as kind of barometer. being yer, sens aye to atmospheric changes, and fore. telling the approach of wei or dry weather In dry weather he shell nearly white. but smal! rec spots appe.s on Il wlth the aPproach of moisture increase in numbe. and size IS the da,ao. ness increases, until during the we, s... son II oeeom compile ely red.
 The chief signal officer has ander,a<er an insestig gation into the progress n waves of cold across the United Sr,,es Among the results obtained thus f,r = nas been ascertalned inat, taking or. assihaooine in Montana as d sta.,lng point, the four cold waves of November iSSi' averaged ten hours in reachinr the sishai-serV!ce stations 1t S,. Nincen, Minn., Huron. Dak.. North Platte. \eo and Cheyenne, Wyo.: twenty hours n iraveiins 10 Duluth, Minn. St. pa.I Minn., Leavenworth, Kan, Fort SI} Tex. and Sante Fe, x. NJ; thirty hours to Marquette, Mich. Milwaukee. Wis Chicago. ILL. Memphis, Tenn. Denison lex. and Coneho, Tex: forty hour, ,o Etie, Pa. Pittsburg. Pa. knoxv,ile Tenn NIckshurg. Miss. and Bracke... vliie. tex, and nifty hours 10 Rochester N l.. Washington, D C.. Charlotte \ N.' Augusta. Ga, and Mobile, Ala.
 Crystals of oxygen have been produced in "is ol hrss hqueiylns the gas under siea. pressure and then removlng me pressure. lhis gives rise to 4 pYra. io"eflna oi the temperature of the lio..i4. ana oNySe9 crysttis are formed in IL
 Neports of extremely low temper.ture. should oe received wItn causion ss,,er- mometers are by no means ,nf.li,hle or lohn kae, r. K !. tells of tw-,t, thermometers which were tested by free, ing mercury, and Of which eighteen gar4 results about two degrees too high. while TWO beautifully mashed instruments. ht London maker oi hish repuie, ind,c..ea 'enpefature about nineteen degree, he 10" the true one. In addition To fat,l,v construction. another sour C of error ,r spirit thermometers Is the condenss,,on of part oi the spirit Tn the upper end o, Inc tube, and Dr. Rae states that the a.. TOT produced in ihls way may amour. 70 ,ight degrees or more
 Some English scientists have been ,-,. Ing 10 explain why II IS that persons who become los, in fog. or who are for any eason unable 10 see their way, usual, walk Tn a circle instead of followin~ 'iiaight line. Mir. w. Larden ,btnt~ nat the cause may be found in a d;ffe-- ,nee in the strength of the legs. ,he ',onger o' the two out~alking the other when not controlled by the will. In cor. ltmauon of this view. NIT. (. H. D,rri- accounts some experiments in wb,cL 'everal school-boys were bhndfoldes mo 'oid to walk straight ahead, whe. he nghi-egsed ones circled in ,ba ell and the " let,-les ged " ones 10 he iish'. exactly ns they should do fin heory IS correct. while one boy whe ee'ned to be neither rlght-leggea roT ei'-iesged 6ut 10 use the ;so l,mss ,g,.- bout equal tacili,y. walked irreguIar ut des.a,ed much jess from a straish. purse than any of the others Ano,6rr inter, NIT Thos. Ha~ksley. suppose hat few persons have both legs of eoraI ensih, Tn which case ,he longer li,rH lust have tendency to ou,s,rip the iher in walking.