how to attach the, 268.

taching, and adjusting, 432.

Inspirator, 430.

Hancock, table of capacities of, 432.
how to operate the, 431.

instructions for setting up, properly at-
taching, and adjusting injectors, 432.
the care and management of steam-
boilers, 478.

the care of steam-engines, 235.
Intercepter or separator, 473.

Internal strain to which boilers are sub-

Letter T, 268.

Levers, 596.

spring, 229.

Lexicon of definitions of central, me-
chanical, and dynamical forces, 587.
Licensing engineers, 30.
Lifter or ejector, the, 434.
Lifters, 229.

Lift of safety-valves, 467.
Lifting and stationary links, 192.

injector, the Keystone, 423.

Light signals for ocean steamships, 390.

Line and line, 204.

Muntz metal, 615.

Natural philosophy, examination in, 49.
Navigation, technical terms and defini-
tions used in, 376.

Necessary quantity of water per min-
ute for any engine, rule for finding,
404.

Net horse power, 266.
Neutral, 535.

Neutralization, 535.
Nitrogen, 531.

Non-condensing engine, economy of the
condensing over the, 107.
Non-conducting covering for steam-
boilers and pipes, 634.

properties of different materials at even
thickness, table showing, 510.

Number of square feet of heating-surface

Quantity of water per lineal foot in
pumps, or vertical pipes of different
diameters, 519.

of water which any square or rectan-
gular box or tank is capable of con-
taining in cubic feet or U. S. gallons,
rule for finding, 524.

Questions for engineers, 99, 162, 246, 334,
436, 491, 585, 668.

Rods, air-pump, 357.
piston, 169.
valve, 182.

Rollers, friction, 591.
Rolling circle of a wheel, 398.
Rotary-valves, 228.

Rubber and leather belts, 642.
belting, cement for, 637.

Rue's "Little Giant" injector, 418.
table of capacities of, 420.

stances, table showing, 508.

Radius-bar, 161.

Radius of the link, 191.

Railroad signals, 391.

Reciprocating and revolving parts of
vertical engines, how to balance, 202.
Reckoning, dead, 377.
Refraction, 380.

Register, marine steam-engine, 367.
Relation between power and speed of

steam-vessels, 399.

Relative economy of marine engines,
uncertainty of tests made for the
purpose of comparing the, 116.
quantity of injection-water required to
condense a certain volume of steam,
342.

volumes of air at various temperatures,
table showing the, 501.

weight and volume of different gases,
table showing, 508.

Release, 265.

Releasing valve-gear, 226.

Relief-valves, 228.

Remedies for knocking in steam-engines,

155.

Resilience, 608.

Results of experiments made on different
brands of boiler-iron at the Stevens
Institute of Technology, 620.

Rev. or Revs., 266.

Reversing-gear for marine engines, 203.
valve-gear, 227.

Revolutions engine has made during
voyage, rule for finding number of,
368.

Revolving shafts, how to prevent acci-
dents by, 643.

Reynolds Corliss engine, 177.
Riding cut-off, 227.

Right ascension, 381.

Riveted seams, friction of, 463.
Rock-shafts, 181.

Rule for finding aggregate strain caused
by pressure of steam on shells of
boilers, 451.

amount of gain derived from working
steam expansively, 67.

approximate weight of iron castings
from patterns, 619.

bursting pressure of cylindrical boilers
with riveted seams, 448.

centre of gravity of taper-levers, for
safety-valves, 469.

change required in length of belt when

one of the pulleys on which it runs
is changed for one of different size,
644.

collapsing pressure of boiler-flues, 452.
contents of an elliptic or oval tank in
cubic feet or gallons, 523.

cooling surface in tubes of surface con-
densers, 343.

cubic contents of a steam-cylinder, 166.
cubical contents of a triangular tank,
524.

diameter of a driven pulley for a given
number of revolutions, 645.
diameter of a pinion when the diame-
ter of the driver and the number of
teeth in driver and pinion are given,
645.
diameter of pump-plunger for any en-
gine, 403.

diameter of toothed wheels. 645.
distance piston is ahead of a central
position in the cylinder, 176.

heating surface of fire-box boilers, etc.,
452.

heating surface of vertical tubular
boilers, 453.

horse-power of a locomotive, 120.

horse-power of a steam-engine by in-

dicator diagrams, 121.

horse-power of simple condensing en-
gines, 121.

engines and fire-engines, 120.
horse-power of waterfalls, 523.
horse-power of wind storms, 500.
internal strain to which boilers are
subjected when under pressure, 451.
mean or average pressure in cylinder
of a steam-engine, 68.

necessary quantity of water per minute

for any engine, 404.

number of revolutions engine has
made during voyage, 368.

number of revolutions in each wheel
for a train of spur-wheels, 646.
number of revolutions of a driver, 646.
number of revolutions of the last wheel

in a train of wheels and pinions,
spurs or bevels, 646.

number of square feet of heating sur-
face in a tube or any number of
tubes, 452.

percentage of loss induced by blowing

off to prevent saturation, 364.
point of cut-off required to produce a
given terminal from a given initial
pressure, 221.

point of cut-off when the initial and

mean pressure are known, 221.
pressure at which a safety-valve is
weighted when length of lever,
weight of ball, etc., are known, 468.
pressure per square inch of sectional
area or crown-sheets of steam-boil-
ers, 451.

pressure per square inch when area of
valve, weight of ball, etc., are known,
468.

proper number of revolutions per min-

ute of any sized saw, 632.
proper thickness for steam-cylinders,

165.

proper weight of fly-wheels of steam-
engines, 193.

quantity of steam any engine will use

at each stroke of the piston, 166.
quantity of water which any square or
rectangular box or tank is capable
of containing in cubic feet or U. S.
gallons, 524.

required area for chimneys of station-
ary boilers, 473.

required diameter of cylinder for an
engine of any given horse-power,
165.

in a pinion to have any given veloc
ity, 645.

required size of a driving-pulley for
any required speed, 644.

safe external pressure on boiler-flues,

452.

safe working-pressure of iron boilers,
451.

strain due to pressure of steam on boil-
er-stays, 452.

strain exerted in a longitudinal direc-
tion by pressure of steam in a boiler,
449.

strain exerted in a transverse direction
by pressure of steam in a boiler, 449.
strength of single- or double-riveted
seams, 452.

weight necessary to put on a safety-
valve lever, 468.

width of belt to transmit a given horse-
power, 643.

Rule for flue-boilers, 453.

tubular-boilers, 453.

Rule to find area of a circle, 538.
a cycloid, 539.
an ellipse, 539.

an elliptic segment, 539.
an hyperbola, 540.
an oval, 538.
any polygon, 539.
parallelogram, 538.

quadrilateral inscribed in a circle, 539.
regular polygon, 539.
sector of a circle, 539.

segment of a circle, 539.
trapezoid, 539.

triangle, 538.

circumference of a circle, 538.

circumference of an ellipse or oval,
538.

curve surface of any segment or zone
of a sphere, 541.

cubic contents of a frustum of a para-
bolic conoid, 541.

cubic contents of a frustum of a pyra-
mid or a cone, 540.

cubic contents of a frustum or zone of
a sphere, 541.

cubic contents of a parabolic conoid,
541.

cubic contents of a prism or a cylinder,
540.

cubic contents of a prismoid, 541.