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Scientific

Scientific image
Parent Issue
Day
7
Month
May
Year
1880
Copyright
Public Domain
OCR Text

Sir John ïïcrechel, at the Capo of Good Hope, cookoJ n beefsteak and roastcd Ogga by inerely them in the sim, in a box covcred witli a glass lidl Tarree! ropos, hawsers and the liko have twen t.y-iive percent, Ie88 streiijfth than white ropos. Th is is in consoquence of the injury the fibj'cs roceivo trom tho liih temperatura of the tar, 2üO degrees. Pure or absolute alcohol mny be ohtaiucd by distilling coinnieroial rectifled spirits of wine in contact with some ni.'itfi'iul having a powcrlul attraction lor water, such as dried carbonate of potash or quick-lime. The ponctcrable ratio, or compai-ative weitfht, bet ween any two bodies, representó by huw much one of thora is heavier than the other, or lichter thnn the other, and the anjouut ot'jjravity specitic to each. Unliki t.lic alkalies, potnsh, soda and amnioniü, wbüth aiv n nlily and lar{0. ] Q.ilnlvii ui walcr, ttTïlO is vcry msbU ttblc hi tJi s fluid ; onc part by woight ot' linie requires no loss thau seveu buudrod and tifty parta oí' water at lio deyreea lor its solution. If charooal in the powder be stitched toto a picee of silk and worn before the mouth t.s a respirator, it will say to II 11 poiSODOUS gilsiuS tllilt COltlQ to the moiitli vvilli the air, "I have taken this post to delend the lungs, and I arrest you on a charge oí' inurderoús inteni.ion." A ne"W robstanco, named "Virginia," lias been ox'tracted trom the residues of petroleum alter Uistiilation, by Prof. ttonnensehein. It is l'atty, ani nearly transpnrent. When lieatcd it gives a blue lluorescence. Itnieltsat 4 7 deg. üeutigrade, and is partially soluble in ether. At the time of the Great Ex'liibition of lööl tlie loeal connnittee oí' Dacca, in India, gave notice that they Would award prizes fol" the best and iinest piece ot' nmalin that could be woven ni timo for the Exhibition. The piece whioh teocircd tlio first prize was ten yards long and one yard vvule, weighilijf only 3 oz. '■J. dwt., and eould bc passed through a very smaü riug. The most dangerous part of the painter's tmdo is "ilatting"; white leaë, turpentine and closely-heated rooms genérate colic. ïhe remedy is sulphuric acid, cleanliness, tubs of lresh water, and fresh air; and, as au antidote, the more frequent use oi' Milite zinc or zinc load. Ín tlic manufacturo oí' lucifer matches, lieatcd or allotropie phosphorus is gaid to be not so dalueroii8 to tlic javvbones as ordinary phosphorus.

Article

Subjects
Old News
Ann Arbor Argus