. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ted thisway will, when dried, be of a bright,black, enduring surface. The immersionin the second bath need not exceed threeminutes in duration. Nickel nickel-plating can be readily ac-complished by heating a bath of puregranulated tin, argol and water to boilingand adding a small quantity of red-hotnickel oxide. A brass or copper article from which is obtained an appropriatecurve, properly plotted. This is here astraight line, and serves to show that aminimum area is desirable i
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ted thisway will, when dried, be of a bright,black, enduring surface. The immersionin the second bath need not exceed threeminutes in duration. Nickel nickel-plating can be readily ac-complished by heating a bath of puregranulated tin, argol and water to boilingand adding a small quantity of red-hotnickel oxide. A brass or copper article from which is obtained an appropriatecurve, properly plotted. This is here astraight line, and serves to show that aminimum area is desirable in designingthe scoop consistent with the volume ofwater to be lifted over a given length oftrough. In the resistances consid-ered are additional to the normal resist-ance of the train to motion, and no ac-count has been taken of the energy storedin the train as momentum. Here it onlyreduces the drawbar pull to zero asdemonstrated by traction in this way with velocities be-tween 25 and 60 miles an hour the follow-ing table is obtained, the area being 50sq. ins.:. Speed )Resistance ( 901 301310 351779 402330 PARTS UNASSEMBLED OF THE ANDERSON FRICTION DRAW GEAR. 45 50 55 60 immersed in this solution is instantly cov- 2940 3610 4320 5220 ered with pure nickel. .March, 1918 RAILWAY AND LOCOMOTIVE ENGINEERING 77 British Railways and the Board of Trade At a very early date in the history ofBritish railways, Parliament conferredpowers on the Board of Trade to in-spect new lines previous to their open-ing for traffic, and to withhold theirsanction of the line being opened if any-thing which might be required by theBoard of Trade inspecting officers to benecessary and requisite for safety wasnot provided. The first act of Parliament, giving thispower to the Board of Trade, appearsto have been passed in 1840, and, inaddition, railway companies were requiredto make returns of traffic and accidents,to submit their by-laws for approval, &c. Th
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