. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . erthe quantity of ash the more difficult forthe air to come through evenly and insufficient quantities. In 50,000 tons ofbituminous coal the ash will probablyaverage 10%, which would equal 5,000tons. If 10% was normal and each percent, above considered as a loss and pur-chased on that basis, and if the percent-age of ash was only equaling 12 per cent.,2 per cent, above normal would in 50,000tons amount to 1,000 tons, which at thelow price of from $1 to $2 per ton wouldamount to from $1,000 to
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . erthe quantity of ash the more difficult forthe air to come through evenly and insufficient quantities. In 50,000 tons ofbituminous coal the ash will probablyaverage 10%, which would equal 5,000tons. If 10% was normal and each percent, above considered as a loss and pur-chased on that basis, and if the percent-age of ash was only equaling 12 per cent.,2 per cent, above normal would in 50,000tons amount to 1,000 tons, which at thelow price of from $1 to $2 per ton wouldamount to from $1,000 to $2,000 perweek, or $52,000 to $104,000 per year. If the ash contains iron and lime andsulphur in sufficient quantities they willfuse in the firebox and run down throughthe fire, blocking the air and enclosingsome of the carbon of the coal, which isthrown away with the ashes. Also agreat deal of carbon is being lost in thecleaning of the fires. In a test recently made at eighteenpoints on the Erie Railroad on ninety-five samples of ashes taken from the ashpits, an average of 33 per cent, of carbon. BOILER SHOWINO CONTOUR OF CROWNSHEET AM> LOW ,. was contained in the ashes. This loss fig-ured out equals a loss of over $3,000 perweek. If only the percentage of thiscould be burned it would make a consid-erable saving. The matter of coal savingis very carefully looked after on theErie Railroad and good results are makingtheir appearance. 504 RAILWAY AND LOCOMOTIVE ENGINEERING. December, 1910. Locomotive Running Repairs X—Setting and Repairing Flues. In the running repairs of all locomo-tives the original setting of the flues can-not be gone about with too much care,especially with a view to note that all scaleand sediment are thoroughly removed,both from the inside of the flue sheet aswell as from the flue holes. It shouldalso be observed that all flue holes areperfectly round and free from angularindentations, and all ragged edges shouldbe removed, both from the
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