INDEX 



811 



Orifice partially submerged, 134 



small, 102 



submerged, 107. 132 



,, time of discharge from, 121, 170 

 Oscillations of ships, 36 

 Overshot wheel, 426 



P. 



PADDLE wheels, 402 

 Parallel plates, flow between, 66 

 Pearsall's hydraulic ram, 691 

 Pelton wheel, 285, 439 



., form of buckets, 445 



number of buckets, 446 



speed regulation of, 285, 447 



theory of, 442 

 Piezometer, 19 

 Pipe flow, 194, 246 

 Pipes, strength of, 38 

 convergent, 55 

 divergent, 84 

 trumpet-shaped, 87 

 Pipe line losses, 246 

 accessories, 271 

 distribution systems, 273 

 Pipes in parallel, 267 



,, maximum power through, 285, 716 

 multiple supply, 265 

 Pitot tube, 217, 362 

 Planes, normal motion of, 386 

 oblique motion of, 388 

 Poiseuille, 2, 195 

 Poncelet wheel, 435 

 Press, hydraulic, 1 9, 764 

 Pressure at a point, 16 



energy, 73 



change of, across stream lines, 95 

 exerted on plane by jet, 381 



gauges, 19 



Principle of angular momentum, 58 

 linear momentum, 58 

 conservation of energy, 58 

 Prony, 196, 291 

 Propulsion of ships, jet, 404 

 screw, 402 



power for, 404 

 nping machinery, 579 

 i\ps, air lift, 699 



air vessels on, 617, 621 

 centrifugal, 630 

 deep well, 590 

 drum, 627 



Pumps, gas, 708 



hydraulic, 600 



jet, 693 



reciprocating, 582 



screw, 581 



separation in, 606 

 Pump .valves, 591 



R. 



RADIAL flow, 79 

 Ram, hydraulic, 683 



water, 232 

 Rankine, 2, 393 

 Rateau, 643 



Rating of current meters, 355 

 Pitot tubes, 220, 362 

 Reciprocating pumps, 582 



coefficient of discharge 



of, 600 

 displacement curves, 



600 



efficiency of, 626 



leakage and slip in, 



594 



., maximum speed of, 608 



,, separation in, 606 



theory of, 604 



types of, 582 



valves, 591 



variation of pressure 



in, 604 



Recoil cylinders, 787 

 Rectangular notch, 138 

 orifice, 128 



Reducing valve, 273 

 Relays for governors, 517 

 Relief valves, 521, 723 

 Resistance of ships, 393 

 Resultant pressure, 26 

 Reynolds, Osborne, 6, 49, 198, 792 

 Riedler, 596 

 Ripples, 361, 419 



Rise in water level produced by dam, 167 

 bridge piers, 326 



vessel, 328 



Riveters, hydraulic, 772 

 Rudder action, 391 



S. 



SAMSON-LKFFEL turbine, 514 

 Sand pumps, 631 

 flow of, 210 

 Schoder, E. W., 255, 257 



