ILLUSTRATIONS.

101

Apparatus: cheap gymnastic, 340; for burn-

ing a mixture of coal-gas and atmo-
spheric air, 276; heating, 44, 359; im-
proved steering, 420; screw cutting, 328
Appliances for the measurement of in-
tense heat, 437

Applying and controlling power, 166
Arithmetic for the blind, 429
Assaying, 424

Astrono-meteorology, 616

Astronomical, 444

Astronomical notes, 247

Atmospheric: bells, 451; churn, 549
Aurora, 476

Automatic boiler feeder, 149

BALANCING cylinders, 162
Balls, casting, 120
Barometer, 108

Bath, hot and cold water, 67
Batteries, chain, 348
Battery: Daniell's, 165; electro-magnetic,
72, 510; improved Daniell, 304; Le-
clanché, 228; manganese, 81, 180; new
form of, 137, 204

Bellows for gas furnace, 91
Bells: atmospheric, 451; electric, 596
Bicycle: improved, 396; steering the, 321;
treadles, 321

Binocular eyepiece, new form of, 612;
binocular microscope, 125; new form of,
612; Wenham's, 165
Blankley's improved live-box, 437
Blind, arithmetic for the, 429
Block-house, an almost impregnable, 60
Blowpipe: 149: for lead burning, 211
Boat: carriage, 526, 541; velocipede, 69
Bogie engines, 66

Boiler: grease cup and, 469; sectional
safety, 536; tubeing locomotive, 358
Boiler-feeder, automatic, 149

Boiler priming, 129, 130, 324

Boiler valve, 500

Boilers, size and strength of, 571

Booth velocipede, 273, 382

Boot-cleaning machine, 597

Bottoming tubs and pails, 571

Boult's moulding, carving, and panelling
machine, 325

Brass, simple furnace for melting, 60
Breech-loading rifles, 127
Brewer's question, 358

Brick-making machine, improved, 56
Bucketting-engine, hydraulic, 80
Burning, glass, 498

geometric, 156; oval, 160; useful, 180
Church, heating a, 192, 259
Churn, atmospheric, 549
Circle-squarers, our, 187
Cistern, 286

Clock: electric, 177, 273; how to make an
2-day, 133: pallets, 477; Strasburg, 181
Clothes-washer and v ringer, 80
Clutch, the friction, 12

Coal-gas and air, apparatus for burning,

276

Coal-measure reptiles or mammals: 224;
vertebræ of, 321

Coal-measures, supposed mammal jaw
from, 497

Coil: 5, 48; induction, 84; old medical, 143
Coin, Asiatic, 23

Coins: brass, 23; gold, 120: silver, 23, 120;

silver, of England, the, 57, 389

Commutator, 618

Comparative solids, 71

Coning of railway wheels, 540

Ellipse: foci of, 140; isometrical, 160
Ellipses and ellipsographs, CO
Ellipsograph, 43, 60

Elliptical: cutting-frame, 358; wheels, teeth
of, 184

Ellis's patent macn.ne for laying-out doors,
sashes, &c., 29

Engine: bogie, C6; electro-magnetic, 190;
hydraulic bucketting, 80; model hori-
zontal, 212; novel, 348

Engineering, elements of, 434, 483, 508, 530,
556, 578, 606

England, the silver coins of, 57, 389
Enlarging camera, cheap, 621
Epicycloids, the, 380

Equatorial stand: 237, 332; Levander's
improved universal, 336
Escapement, half dead beat, 594

FACE plate, cutting thread on screw of,

621

Feed-cock for kitchen boiler, 564
Feed-pipe, ruptured, 164
Feeding poultry, 381

Figure, quadrilateral, 526
File, new lathe, 445

Finder for telescopes, removable, 497

Coupling chains, 348

Couplings for railway carriages, 440
Craters north of Posidonius, 516
Ctenodus: 112; obtusus, 160
Ctenoptychius obtusus, 469
Cure for smoky chimneys, 349
Curious: caterpillars, 102; occurrence, 166
Cutting: screws by hand, 517; teeth of
wheels, 36, 113, 184, 204; thread on screw
of face plate, 621
Cutting-frame, elliptical, 358
Cylinders, balancing, 162

DANIELL'S battery, 165: improved,
304; new arrangement of, 568
Definition of object-glasses, 439
Detector, low water, 420
Diagonal plane, mounting, 492
Differential calculus, 481
Dissolving-view painting, practical instruc-
tions in the art of, 194, 338, 555
Distilling water, 197

Dividing apparatus attached to lathe, 277
Division plate, index peg for, 180
Domestic organ, 137

Doubtful scapulæ, 353

Fish, new genus of, 372

Fishing lines, 92

Fixing india-rubber tires, 476
"Flat" mounting, 565

Flat vice, or "omnium holder," 568
Fluting and flat iron, 581
Foci of ellipse, 140
Focus, 13

Formation and antiquity of the world, 5,

101

Fortifications, 104, 125, 151, 171, 196, 218
Four-jawed chuck, 588
Four points, 477, 526, 620
Frames, picture, 284
Friction, 390, 486
Friction clutch, the, 12
Fulling mill, 622
Fungi, 372

29

Gas-joint, universal swivel, 44

Gas-pressure gauge, 20

Gasketing, square, 621

Gassendi, 129, 225

Gauge, gas pressure, 20; recording steam,

463

Geology in relation to agriculture, 316,

488

Geometric chuck, the, 156
Geometrical problem, 69, 85

EARTH, how to make a sun-view of Geometry, 70
the, 73

Earth's rotation, cause of the, 106
Eccaleobion, or egg-hatching machine, 572
Eclipse, the, 493

Eclipses and occultations, graphical pre-
diction of, 493
Egg-hatcher, regulator for, 259
Egg-shaped sewers, 376

Elbows: patterns for, 526; pipe, improved,

607

Electric: bells, 596; clock, 177, 273
Electrical, 383, 429

Electrical machine, grinding plate for, 160
Electricity, its theory, sources, and appli-
cation, 1, 76, 290, 435
Electro-magnet, winding, 431

Glass burning, 498
Globe, cardboard, 213
Globes, readings from the, 13, 225
Goniometer, a cheap, simple, and good,

205

Graphical prediction of eclipses, 493
Grease-cup and boiler priming, 469
Greenhouse steppers, 404
Greenhouses, heating, with gas, 161
Griffin's gas furnace, 29
Grinding: plate for electrical machine,
161; wheel, patent composition, 324
Gun, Krupp's 1,000-pounder siege, 104
Gymnastic apparatus, cheap, 349

HALF dead-beat escapement, 594
Electro-magnetic: battery, 72, 310; engine, Hamburg, puritying water in, 348

190

Electrotyping, 284

Elements of engineering. 434. 483, 508, 530,
556, 578, 606

Handrailing 451

Harmonium: a practical treatise on the,
4. 76; and organ combined. 249: con-
struction, 187; pedals, 120

Lamplighter's staff, 215

Land: question, 45, 68, 139, 163; surveying,
26. 51

Lantern, magic, 286

Lathe: 445, 454; an inexpensive, 182, 516;
chucks for, 622; conversion, 256; divid-
ing apparatus, 277; file, new, 445; heads,
397; planing head for, 373; queries, 141,
260; tools, 622; Whitworth, 613
Launch, steam-screw, 321
Laying-out doors, sashes, &c., Ellis's patent
machine for, 29

Lead-burning, blowpipe for, 211
Leelanché's battery, 228

Lenses, properties and powers of, 121
Levander's universal equatorial stand, 536
Lifting pump, 115