Platforms, working, of the U. |
S. S. Philadelphia, 380, 381.
Port, opening of, to steam,
162, 163.

Port openings, rule for find-
ing area of, 121.
Porter's rule, 121.

Ports and slide valves, pro-

portioning of, 120-124.
Pressure, action of the, on
boilers, 239, 240.
Pressure allowable on boilers
built prior to February 28,
1872, 199-217.
Pressure, high, gain by, 52.
Pressure, how to find the to-
tal amount of, 318.
Pressure, mean, of steam, at
different rates of expan-
sion, 105.

Pressure, mean, to find the,
103-105.
Pressure, range of, and ratio
of expansion in a single
cylinder, 43, 44.
Pressure, to determine the,
allowable for cylindrical
boiler flues, 207.
Pressure, to determine the,
allowable on lap welded
flues, 204, 205.
Pressure, to determine the
thickness of material for
any required, 205, 206.
Propeller shafting of the
U. S. S. Philadelphia, 381,
382.
Propellers, screw, of the U. S.
S. Philadelphia, 382.
Proportioning ports and slide
valves, 120-124.
Pump and distiller of the
U. S. S. Philadelphia, 379.
Pump buckets, 183, 184.
Pump, centrifugal circulating,
of the U. S. S. Philadel-
phia, 376.

Pump, circulating, size of,
183, 184.

Pump, circulating, table of
the ratio of capacity of cyl-
inder or cylinders to that
of the, 184.
Pump connections to fire-
main of the U. S. S. Phila-
delphia, 385.

Pump-cylinders of the U. S.
S. Philadelphia, 379, 380.
Pumps, air and bilge, of the
U. S. S. Philadelphia, 375,
376.

Pumps, auxiliary and feed of
the U. S. S. Philadelphia,
378.

Pumps, feed, 189-191.
Pumps, fire and bilge, of the
U. S. S. Philadelphia, 378,
379.

Purves' furnace, 276.
Ramsbottom's rings, 155, 156.
Rankine, Clausius, et al.,

theory of the steam engine
laid down by, 29.
Rankine on the best chimney
draught, 228, 229.

Rankine on the waste of fuel,
226, 227.

Reaumur's thermometer, 322.
Receiver, definition of the,
27.
Receiver, intermediate, the
use of an, 97, 99.
Receiver space, 163, 164.
Receivers of the U. S. S.
Philadelphia, 365.

Repairs at sea and how to

make them, 296–311.
Resistance, how to find the,
318.

Reversing gear of the U. S. S.
Philadelphia, 370.
Revolution indicators of the
U. S. S. Philadelphia, 384.
Riveted flues, 200-204.

Riveted joints, table of per-
centage of strength of, 284.
Riveted seams, 278-285.
Riveting, table showing loss in
strength of plate by the ordi-
nary system of, and gain
by improved system, 284.
Roberts, E. E., water tube
boiler of, 291, 292.
Rocker-shaft, position of the,
147.

Rowland, T. F., & Co's fur-
nace, 276.

Ruggiero di Laura, the com-
pound engines of the, 408-

410.

Safety-valves, lever, of boil-
ers, 212-216.
Safety-valves of the U. S. S.
Philadelphia, 390, 391.
Salinometer pots of the
U. S. S. Philadelphia, 391.
Saturated steam, properties
of, 329.

Saturated steam, table of the
properties of, 413.
Screw propellers, 177.
Screw propellers of the
U. S. S. Philadelphia, 382.
Sea valves of the U. S. S.
Philadelphia, 377, 378.
Seam, flanged, first employ-
ment of the, 237.
Seams, riveted, 278-285.
Sentinel valves of the U. S. S.

Philadelphia, 390, 391.
Separators of the U. S. S.
Philadelphia, 395.
Sequence of cranks, 69, 70.
Shaft, to line up the, 302-304.
Shafting, line, 176.

Shafting, propeller, of the
U. S. S. Philadelphia, 381,
382.

Shafts, broken, 306.

Shrinkage of castings, 337,
338.
Simple engine, to find the
horse-power of, 100-102.
Single bar link, 131.
Single-ended or single-fired
boiler, 252-254.
Slide-valve, how to set a, 143-
147.

Slide-valve, table to ascertain
the amount of lap ou the
steam side of a, to cut the
steam off at various frac-'
tional parts of the stroke,
141, 142.

Slide-valves, 106-119.
Slide-valves and ports, pro
portioning of, 120-124.
Slides and guide-blocks, 160,
161.

Slides, to line up the, 302.
Slot link, 127, 128.

Slot link, size of, 130, 131.
Slotting motion, 126.
Smoke-boxes and up-takes of
the U. S. S. Philadelphia,'
389.

Smoke pipes of the U. S. S.
Philadelphia, 389, 390.
Smoke-stack or funnel, 271,
272.

Specific gravities, table of,
322.

Spring bearings of the

U. S. S. Philadelphia, 383.
Squares, cubes, square and
cube roots of numbers, ta-
ble of, 415-420.
Steamboat rules, changes in,

221.

Steam boilers,

average
amount of coal used for,
317.

Steam boilers, forms of, 231-

250.

tween the, 152.

ted States government,

general rules and regula-
tions for, 194–221.
Steam coal, 323-326.
Steam, condition for the ad-
mission of, 109.

Steam, dynamic effect of the,
in the feed water, 270.
Steam, effect of the weight
of, 53, 54.

Steam engine, definition of a,

30.

Steam engine, discharge of

water by the, 32.

Steam engine, theory of the,
29-49.

Steam, expansion of, 50-54.
Steam, expansion of, in the
ordinary single-cylinder en-
gine, 37.

Steam, flow of, through pipes,
318-321.

Steam-gauges, 216.
Steam governor of the
U. S. S. Philadelphia, 371.
Steam, greatest weight of,
evaporated per square foot
of grate per hour, 262.
Steam-jacket, discharge of
water by a, 33.
Steam-jacket, effect of the, 34.
Steam-jacket, experiments to
test the value of the, 31.
Steam-jacket, mode of opera-
tion of the, 30, 31.
Steam-jacketing, 39-41.
Steam-jackets, 63, 64.
Steam-jackets, the efficiency
of, 55-60.

Steam, mean pressure of, at
different rates of expansion,

hour, at least ratios of ex-
pansion in best engines, 42.
Steam-pipe, main, 149, 150.
Steam-pipes, auxiliary, and
valves of the U. S. S. Phila-
delphia, 392.
Steam-pipes, main, of the
U. S. S. Philadelphia, 394.
Steam ports, 106.
Steam pressure, table of, al-
lowed on boilers, 217.
Steam, rate of flow of, into a
vacuum, 318.

Steam, release of, 109.
Steam, saturated, properties
of, 329.

Steam, saturated, table of the
properties of, 413.

Steam, table to ascertain the

amount of lap necessary on
the steam side of a slide
valve, to cut the, off, at
various fractional parts of
the stroke, 141, 142.
Steam, total work done by
the, 50.

Steam velocities, 65, 66.
Steam, waste, earlier release
of the, III.

Steam yachts and launches,
339-342.

Steam yachts and launches,
small, table of dimensions
of, 341, 342.
Steamers, general rules for,

210.

Steamers, general safety rules
for, 211.

Steamers, high pressure, 210.
Steel and iron, breaking and

crushing strains of, 323.
Stern-gear, 125.

Stern pipe stuffing boxes of
the U. S. S. Philadelphia,
382.
Stevens cut off, how to set a,
310, 311.

Strap joints, most approved
triple-riveted butt, 279.
Strength of boilers, 239-250.
Strength of substances, 335,
336.

Strength, tensile, to ascertain
the, of boiler plates, 194, 192.
Stuffing-boxes, stern-pipe, of
the U. S. S. Philadelphia,
382.

Substances, hardnesses of,
336, 337.

Substances, strength of, 335,
336.

Substances, weight of differ-

ent, 333-335.
Superheating, 39.

Surface condenser, Wheeler's
improved, 184-187.
Surface condensers of the
U. S. S. Philadelphia, 374,
375.
Suspension-pin, position of,
128-130.

Table by which to ascertain
the amount of lap necessary
on the steam side of a slide-
valve to cut the steam off
at various fractional parts
of the stroke, 141, 142.
Table by which to find the
relative state of piston and
exhaust after expansion,
140, 141.

Table of approximate num-

bers for various purposes,
421.

Table of cylinder ratios re-
commended for triple ex-
pansion engines, 84.
Table of dimensions of small
steam yachts and launches,
341, 342.

Table of flow of steam
through pipes, 320.

steam at different rates of
expansion, 105.

of

Table of percentage
strength of riveted joints,
284.

Table of specific gravities,
322.

Table of squares, cubes,

square and cube roots of
numbers, 415-420.
Table of steam pressure al-
lowed on boilers, 217.
Table of the properties of
saturated steam, 329, 413.
Table of the ratio of capacity

of cylinder or cylinders to
that of the air-pump, 182.
Table of the theoretical value
of American coals, 326.
Table of thickness of lap-
welded flues, 206.

Table showing cylinder ratios
of triple expansion engines
for variations in the boiler
pressure, 89-91.

Table showing loss in
strength of plate by the
ordinary system of riveting,
and gain by improved sys-
tem, 284.

Table showing the diameters

and areas of circles, 414.
Table showing the width that
will equal one-quarter of
one square inch of section
of the various thicknesses
of boiler plates, 197.
Tables of comparative results
from steamers with com-
pound and triple expansion
engines, 77, 78.

Taking care of an engine,
312-316.

Theory of the steam engine,
29-49.