File:Railway and locomotive engineering - a practical journal of railway motive power and rolling stock (1906) (14572243159).jpg

Identifier: railwaylocomotiv19newy (find matches)
Title: Railway and locomotive engineering : a practical journal of railway motive power and rolling stock
Year: 1901 (1900s)
Authors:
Subjects: Railroads Locomotives
Publisher: New York : A. Sinclair Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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cycle from the clash of the atoms ofhydrogen and oxygen until the ultimateproduct is congealed in the form ofsnow. One of his similes is drawn fromthe stupendous forces of nature exhibit-ed in the mountains by the fall of rockand ice from the crest of one of thelonely peaks. He tells us that thechemical union of the two gases in suf-ficient (juantity to produce nine poundsof water is equivalent to the fall of aton weight from a precipice 22,320 ft.high, and that the energy required tovaporize this quantity of water wouldbe represented by a further fall of thisheavy weight down a chasm 2,900 ft.deep, and, lastly, the heat energy liber-ated in turning the nine pounds ofwater into ice would be equivalent tothe drop of one ton through a distanceof 433 ft. Truly, the forces which actupon the infinitely little, far surpass inpower and intensity those which manhas learned to control. In summing up the whole operation,and putting it in almost poetic language,Tyndall says: I have seen the wild
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SNOW SHED, WITH SUMMER TRACK OUTSIDE, SHOWl.Ne, I ATWHERE TREES HAVE BEE.N SWEPT AWAY. :..NuW SLIDE which has been constructed with openspaces at intervals for the purpose offire protection. Many of the sheds arebuilt with what are called summer stone avalanches of the Alps, whichsmoke and thunder down the declivitieswith a vehemence almost sufficient tostun the observer. I have also seen RAILWAY AND LOCOMOTIVE ENGINEERING March, 1906. snowflakes descending so softly as notto hurt the fragile spangles of whichthey were composed; yet to producefrom aqueous vapor a quantity which achild might carry of that tender ma-terial demands an exertion of energycompetent to gather up the shatteredblocks of the largest stone avalancheI have ever seen and pitch them totwice the height from which they fell.In the practical business of keeping amountain railway open, a slide whereit falls directly on the track is sure toconstitute a very formidable blockade,as it piles deep on the shelf cut out forth

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