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Popular Science

Popular Science image
Parent Issue
Day
30
Month
July
Year
1880
Copyright
Public Domain
OCR Text

The electrie liglil U boin fittWl to nlldepartinont') ot' tl ie Brlt.ish museum. The tcinpomry fittings ma 'c to experiment with have been remove.l. "Tonto glycerine"' consista of 1,300 srrammes of pure fflyeerino, 99 drops of wheture ot' iodinc, and 30 ceutigraimncs of iodidc of potassium. It is a goud substituto f or oil, and the dose is a tnblespoonful a quartor of nu hour beforo eioli meaL It is important in workshop imnipulation io ivnkiiuber, thai, ira piuco of cBSt sts'ol bo mudo rtd-hot and quenoiie l iu colit walcr, it will becotuo louter, uut, it' tho saine oporation Ijc purlunued on a pióos of wroUjfht irou, il will becoino shorter. it seeillS tb:it tho original inventor of the fi'Uie, glyoertilO, aml water procesa of copyiuj} letters, wliicli has been extensively intro.lucod Witlijn the past few years, lias out.iined in this cjuntry a paicnt lor hia dovice, dated May 18, 1Ö8U. lie outaiiwd a patent iu Gorinauy two years agi. A very favorable reportof te-itsof Mr. E iison's dynamo machine au I eleetrlc lamp is publiáhed in the Jnno nuiiiLx;r ot tho American Journal of Science. ï:ie experimonterj vvere Proft. BrauKet and Yuung. A horsc-powcr was found capable of inaint.iinin 10.2 lanips of 10. 7 can Lle-i eacli. An infusión of about a ponnd of quassia chips to elglit gallons of water bas been found very useliil in prevent[ug blight in pü.ich-trees and Tinos. II' soincof the iufusionis put npou ilie lianda and foos afler washin tiiere ■will be very litlle inconveniente lelt du ring the. day trom the attaeks of mosquitoés, gnats, or other insect pests. Bromine is likcly to ro into extonsiveuseasadisiiifectint,now tliat itcan 1)0 had in a solid fonu, or, more striotIv spcakinir, as a coinpoimd whieli readily yiehls tlio bromine, and whieli can be casily transportad. A Prussian chemist has hit upon tho happy idea oí causing bromine to be absorbed ly silicious marl or tlio shells oí' infusoria, which lias been' employed to take up nitro-ylycerine in order to mako dynamite. Tliis is an easy way ofdetectlng the purily or adultor ilion ota sampío of wine: Dip a amall sponge inio the ■vino to be tested. Piuco tlio spon.'Q theli in a saneer, the bottom of whioh is covered with a small quantity of water, lf the wine is pure, it will take Iroin a quarter to a liaif an hour bolore the water iu the saneer bicornes coloree!, but ií the wiue ia not pure, the colorín: oí the water takes place immediately. The Druggitfi Circular says that a nfiíiss resemoiinyf nlbuei"j an.l a soluble iu llnsoed oil,may be prepared by heatiíig 111 au ïron kettle, whicii Blioukl be oiily half Lt lied, ten pounds oflsulpluir and tweniy pounds of rap seed oil, wilh constant surriug uiuil the sulphur is nieited and tuttinada üegins to avvell, WliOD it is pouiva into a inold duslud wiLli bO.ne kiud ot' powder, and Ulovve i to Uardeu. Linsood oil insiy be uscil iiisicad of thu rapescod oil, bnt tliun Llio quauLity oí' sulyhur ninst be ruduccd. A ï-ocent report on injurious insects statos tliat Uiu popular lUc.i tUutgl'UU are killud by e-viruiuo oold iá not uorue out by facts. Au cxamniLition of tne larvas and pupaj LHat lma, beun iully expo.-jiid to lüu iullucuco of trost sliowcd that Uiey were uianjuru.l even wlieu tlio earili eonuiiuilig tliein wa ïïvzüü so hard lliai the iiiaiís had to bu broten wiLli a Jiauuner. i''i'osL, tnen, instead of üiinhtisúing the nuinuer 01 insect pesLs, U.is a tcuilenry jast tlie otiier way. For, not oniy uoes tlie irozeu ean li aliord u saie relreut lo tne gruus iVoui me attaoK ot' biiMs, beu CioedStve and proloned culd pi'uVOü 1'atJ.l to tlie Oirás tueitiselves.

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Subjects
Old News
Ann Arbor Argus