Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

722 INDEX. PAGE Discharge of Water from Canals .. .... .. 266 -------------------from Channels ..............265 -------------------from Orifices .............244 Displacement, Simpson’s Method.................554 Distribution of Weight in Locomotives.............224 ! Diurnal Barometric Wave 14 Docks..................295 -----Floating .. .. 295 Dollars and Cents, Table of 602 Drainage of Land .. .. 290 Draught of Chimneys .. 472 Drawing Paper, Sizes of.. 691 Dredging Machines .. .. 434 Driers.................429 Driving Piles..........116 -----Wheels of Engines, Revolutions of .. .. 602 Drying Oil for Paint .. 429 Dubbing ...............428 Duration, or First Cost .. 611 Duty of Engines .. .. 458 Dwelling Houses, Walls of 94 Dynamite................86 Dynamometer..............43 i Earthen Pams...........288 Earths, Slopes of .. .. 84 -----Weight of .. .. 84 Earthwork, Bulk of.. .. 87 ----------Formttlæ for 58 ----------Measurement of, on Sidelong Ground 79,80 ----------Prismoidal For- mulæ ...................58 ----------Proportion of Getters to Fillers .. .. 84 ----------Tables of 59 to 81 Earthworks, Field .. .. 579 Efflux of Air .........547 PAGE Efflux of Steam .. .. 450 -------Water under vari- able Pressure..........268 Egg-shaped Sewers .. .. 273 Elastic Force of Steam .. 450 Elasticity, Modulus of .. 22 Electric Lighting .. .. 36Ö Electrical Formulæ . • .. 321 -------Standards .. .. 300 Electromagnets .. .. 305 Elevation of Outer Rail on Curves.................213 Ellipse ...............643 -------by Circles .. .. 641 -------Intersection of Lines .............. .. 640 -------Ordinates .. 643 -------False, Calculation of, Centres................641 -------Formula for .. .. 642 -------when Diameters are not at Right Angles .. 644 Ellipsoid..............658 Employes, Railway, Num- ber of ................235 Engine, Locomotive, Balanc- ing ...................516 ------------------Boilers 477 ------------------Centre of Gravity in..........503 ------------------Dimen- sions of .. .. .. .. 506 ------------------French Practice in .. .. .. 504 ------------------Lap and Lead of................501 --------...........Propor- tions of---------------501 ------------------Speed of Piston of...........502 -------Pumping .. .. 282 ---------------Horse- power of...............283 -------Binging.........118