| Show SCIENTIFIC MISCEllANY Th The aIr at the Is found to contain 21 ier Ir cent or of oxygen 78 ot of nitrogen 03 of carbon dioxide 54 j jot ot of argon 01 or of helium And 02 or of hy Prom From data lata b by lea Gau tier DAlton and lAplace Dr baa calculated the proportions of oC these gases II In the air RI at Increasing heights heIght and that we aUstin gulch live fin strata or The lowest atmosphere coms on the aqueous clouds anti And carbonic 11 acid 1 a 1 height of U Umile 1 miles mile The Th o ln almo atmosphere extends beyond this hale to 30 miles when lie pro Iro po of oC oxygen to than 10 er Ont cent use nitrogen nt at bile poInt tR T to St pet ent gradually diminish diminishing In ing to 4 per sit lit IY 00 mil miles Then tol fol follows lows 1011 th the II salters helium reaches Its of oC IC 16 per percent cent This gradually gives Iv way y to h hy which Rt at mile forms 90 50 per percent cent ot of the air auth In the lIle layers of the I a this the gas gall irea eat ent That our fond tood will some I 1 bi b built up UI chemically from nitrogen carbons carbon and other tINI elements Is Ie a 1 fee tas theory Upon ullOn stitch moat scion title men look M r lot however I is Ill cited as an P believer and he ha is II stated tn 0 foresee both artl arii And artificial bread A curious similarity between the lit littI littIe tI tIe action of ferments anti the contact actIon ot of hu bias been to o notIce 11 by two German chemists The ferments Are ot of two organized puch am Ue thus yeast fut hll nl that changes sugar to alcohol A 1111 the lItho active C ferment that oxidizes alcohol Into acetic Reid acid anti And antiI the lie I I such h as 11 converts t 1111 Into sugar luar Without entering the reaction these ferments cause In In lar large quantities ot of material materia their action being stopped L by heat hat anti certain poisons Platinum In A state slate alcohol to acetic acid and cane larte HUKILl and in III l terra Corm dl dissolved In III IU as produced hi by N It strung III passed water I is action I Is even en more mare Ilk like One part In about causes decomposition ot of peroxide The pla pia Ilia no chemical part In the reactions and lie Ita actIon is III arrested b by Powerful poisons with for be afterward partially re recovered covered Iodine vapor I is an a agent ent for tor detect detecting In ing frauds and ancI Illera In business kaRen thAt Prof and Ondy experts haive round found ot of value alue It turn turna lie piper blue and It if not too no I lightly or poorly the he surface shows 1 y irregular coloration I where attempts to chan change hive hae been bems Parts Part that have hoen wet a aby as asby by inks to be made vIsible by some IOme reagent or th home that have quickly faded take on a deeper blue blut ariu that liars e been Jeen toe tau slightly to siTed tho if tb the paper show yellowish or nr yellowish brown which on wetting anal then drying becom a sleeper blue unless till Lii erasure h hiss r some ot of tOss surface when the shade la is Writing that erased may mar bf be brought out by treat lug IIII th he reverse Ir e ot of the piper paper with Iodine miar while holding the lie sliest In ot of a mirror Att After r Ireful careful investigation the mt meal Ical feal fA faculty of oC 01 the University of untie here berg has that and gas Incandescent lights are not nol harm ful iii to the eyes lii In hall hails and oiher where many people rather gather light lIht In by I Is desirable for tor luy II reasons Duming DUling the lie II last t the sub or Of stid gutta J rehA hat received considerable n ld atten attention attention tion The r research hiss haM stImulated 1 b by the he early rl discovery that It a dIstilled from and oxIdized b by Acids ald into Inlo ems n elUo mass mall th the of the list lilt ural ran can ha d also allO from gutta turpentine oils the rhe experiments have that the artifIcIal gum urn can bt bi Produced the lie problem now being how to this coat This The flew tew s BUill of M 1 who I Is known knon IS as this the ot of t is by heating vegetable oil it degrees to 10 degrees e C and Ind oxidizing by a cur current current rent or b by barium or an S as the oil begins to harden 25 lr ller cent b by weight ot of cob colo resin II 6 per rent Int or of powdered sUlphur 6 5 or 10 per cent ot of spirit of tur lur and Ind I 1 to 2 per r cent or of carbon chloride On Oms reaching the proper pasty consIstency h he is 18 and I Is the artificial For Jor lutta gutta per percha cbs cha the formula It is varied by lisa sUlphur and spIrits ot of turpentine amid increasing till list of r resin ln The gum is III also ahlo Ir by a allt wet In which the mixture of at Vegetable oIl all and ruin resin I is oxidized In boiling water br odd The of lightning flashes Ins In pictures taken lIy by moving cameras allier Ina may be spread out by the mo motion ion tion this the luh not nol instantaneous mall successIve discharges s Along the saint Path may hi the Ihl ert of oC thin time of he discharge or I the he conducting petIt path ma may be 11 by tOut the wi wind lid l 1 Porch Fords ties hal tl lIng theories One On h both the broadened lightning and build In inga broadened to the came am thus testifying to the oC the path paila lIB as II as the limited I mi ot of th the flash fluh hile other were leis conclusive It II ceru alms that broadening by br wi wind lid WA was absent abent A filament of oC thorium b by and coated wills th oxide is claimed by Carl erl of to yield more mor and lees heat tram from an electric current lien Ihan the ordinary car carbon carben bon ben filament Another kInd of oC filament I Is made from a mixture ot of graphite anti metallic oxides |
