rotary
■ modes of applying
■ paddles .
for vessels
Prony, R.
Propelling vessels .
screw
Pumping expels air from water
water
301, 306, 313, 314
313, 325
33, 120, 230
297
App. 231
168
274
Pumps, rule for finding the volume of App. 214
finding the power requisite
to discharge a given quantity of water ibid
finding the velocity neces
sary to discharge a given quantity of
water . . App. 216
finding the diameter of,
to discharge a given quantity of water
ibid
App. 2
R.
Radius bar
Rail road
Raising water, engines for
Reciprocating engine
Rectilinear motion of steam
Regulating by cataract
injection
expansion
production of steam
of the fire
Regulation of power
by pump
Regulator
air
Renwick, Dr. J.
Resistance of parts
of fluids
Roy, General
Ruby, Gravesend packet, engines of
Rule for conversion of heat into steam
for the quantity a gas or vapour ex
pands under a constant pressure . 82
Rules, practical, for boilers . App. 207
the dimensions of, for
any given power when rectangular ibid
when cylindrical — 208
the requisite thickness
of plates for . App. 208, 209
the height of a column
of water to supply a boiler against any
proposed pressure . —
cylinders, requisite
thickness of . . —
chimney, area of
eccentric —
fire grating —
governor
PARALLEL MOTION —
the point in
the link where the piston rod must be
attached
the length of
the radius bar . —
the length of
radius bar when it and the piston rod
are attached to the links at different
distances
the lengths of
ibid
218
— 219
9,
parallel bar and radius bar, when the
latter works from a stated centre —
piston rod,diameter of —
pumps—the number of
cubic feet in the volume of a cylinder — 214
the power re-
2 i