The Arkansaw traveler., 1884-05-17
tCe~efiSf fsy Ts< 4frkrss1av Ty1rel<y. ! SCIENTIFIC MISCELLANY


 Prof. Reinsch states ;ha. copper and silver cons n circulation soon become covered ssl.h bacteria ard micloseopir elgae.
 The possibility of obtaining iliunin. aiIng Fas n considerable quantities from tac dropp,nss ot cows and horses has 7ecn dcmons;r4 cd to the French s4ca1emy q Scenes by Mons. Ga9o, The 9focess does not lesson the value of the fertilizer.
 English statistics show that permanent btindEess IS largely due to inflammation of the eyes n iniarcy. rnalaay easv n avoIc oy proper care. h ;he large En- s',sh c'lics inc sanitary authorizes are sad so re .akias ..-ps to~arg n1akirg knosfn .sJncng the poor the precautions which should be aoop.ed
 speech has recently been photograph ed nc pi tate wes obtained by rnov.ng a photo a2hse p.s.e quickly 2zst a dlaphsagm uhra'ed hy the voice. 4 boaneloF ilBe oe;aeeil light and shadow was .hus produced en me plaie, ;ormin. eaives closely cor csponding to ine ssunG
 
 complicated ones fer corsonants.
 At f3..s. Barrow, Alaska. the recently fe:ur.ed niIed states expedition iound evidence that me ground IS frozen 10 : depih oi ne--ly 20 feet Below pom: ie" yareF ron he surface the temper alc:e heHer change. From November io May no irving hing nay be seen O.. this lane eNcep; the limit and h.s dog and an occasional stray reindeer or white fox.
 Dr. II. |. Walker has found eoo3 reasons fer assuming that earth-worms .1fc the invasiaole companions of nan. and eSis. only IT. regions where he has settled. After settlement they ars, ap- pear n the vicinity of the stable yard. then n portions of the soil enriched by stable manure. and at length m all soil whether cultivated CT simply pastured by domesticated animals.
 investigations concerning the effect of different forms of artificial illumination on the health have shown that the tallow candle Is the most unwhoIesome agent. and inc electric .l.,ht the best. The ln- eandescent electric lamp produces only about one-thl.tieth as much heat as the taliow candle, while It gtYes oa. DO car oolie acid O. water. Ore gas Jet in l room $ said 70 ,:,i4se the 4.!r as much as s'N persons.
 Coasumptioa' ou2 Stree Dust. t.-Mons \ lSnai has con ladel iha. the germs of consumption na. tarx IT he dust 0. rooms or streets, as ne hss proven thzi the bacil.l n inc matter expectara;ed by eonsamptlye patsenss are uot destroyed by belng sepe.. ', z.iicd ard mois ened. and dust eeB;aiatn saeh matter may be n asent i oortaslen ;o persons predis- posed 10 he disease or n whom the oaciiii nnds suitable soil tor pIopaga.ion. \ sainca-pi., Inocu. sted with he matter IT the condition in which T. Is likely 10 eNist in the streets ed in three mont..s from senline consumption
 H,ash Fisheries The importan. ser wees rendered by science to the fisheries ot the United States and other countries have al last produced quite an impression Tn Great bu,ain. he London fisheries oi last lear has been followed by the establishment of marine labor a,ory Tn Scotland and a society of cmi- '-N N''~ ~-'~'N'7'@ 70 i4NN OSAtas, VI IS1ll4Su TOT the study of British food fishes and mol lusks, and all other animal and vegetable resources of the sea. The new body is lo be known as !" The Society for the Biological Investigation of the Coasts of the United kingdon.,7 and Prof. Huxley IS its frs, president.
 The Hand as Telephone.-An ex- perimenteE of South Holland has dis covered that the glosed land may serve as receiving lnsirumen, when |, is placed in a,eiephonic circuit He made use oi an Alder micropnone as a trans hitter, connecting inc primary of an in- iucung coll 10 II aud 10 three Bunsen ,eils, the secondary of the coil being in ,itocit with d nine-sell Leclauche bat cry and the line. Two persons standing n dis.an; room held the ends ot the wires in their naked hands. ard sounds ,f whis,ling or singing made near the nicrophone were heard by one of them when the other pressed gloyed hand irmly against his ear, although the ounds transmitted were so feeble ,ha, 'peech could only be partially under tood.