Popular science monthly . This Grease Ball Was aSticky, Insoluble Feed WaterDeposit Formed in a Boiler A Soap Which Is Not Usedfor Cleansing F(^RTY miles removed from thefamiliar grease product marketed asdifferent varieties of soap is the grease-ball shown in the accompanying illus-tration. It was formed in a boiler as adeposit resulting from the precipitationof the carbonates of lime andmagnesia in the feed feed water enters ahot boiler the carbonatesof lime and magnesiathat the feed containsarc precipitated from so-lution and if the circula-tion in the boiler is nottoo active the
Popular science monthly . This Grease Ball Was aSticky, Insoluble Feed WaterDeposit Formed in a Boiler A Soap Which Is Not Usedfor Cleansing F(^RTY miles removed from thefamiliar grease product marketed asdifferent varieties of soap is the grease-ball shown in the accompanying illus-tration. It was formed in a boiler as adeposit resulting from the precipitationof the carbonates of lime andmagnesia in the feed feed water enters ahot boiler the carbonatesof lime and magnesiathat the feed containsarc precipitated from so-lution and if the circula-tion in the boiler is nottoo active the precipita-ted matter often floatson or nc;u- the surface fora lime in light the floating car-lioiiaUs imite with theorganic parts of any oiltiiat may be in the boilerthe soap is formed. Popular Science Monthly 371 Why You Could Not Get YourMan on the Wire. The Books in the Illustration Are Holdingthe Receiver Off the Hook, Indicating toCentral That the Line Is Still Busy IT is a generally conceded fact that thetelephone operator at Central is a\ery necessary evil designed to teach uspatience; but a study of the accompany-ing illustration from a photograph by\ai. B. Mintun, of Kansas City, Mo.,may avert a few anathemas from herunsuspecting head. The picture tellsits own story most effectively. It maynot be invariably the reason why youcannot get in touch with the party youdesire to reach by telephone, but itvery often happens that carelessness inhanging up the receiver leaves thecircuit still closed, as it is when thetelephone is in use, indicating to Centralthat the line is busy. The receiver mustsuspend its full weight from the hook inorder to leave the line open. A Typewriter Made Especiallyfor the One-Armed IX all of the belligerent countries theeffort is being made to find waysand devise means by which the war-cripples may be able t
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
