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, 519
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
Pagie engines, 66

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

Beiler priming, 129, 130, 324

Boiler valve, 500

Boilers, size and strength of, 571

Booth velocipede, 278, 382

Boot-cleaning machine, 597

Bottoming tubs and pails, 571

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

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

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

CABINET, 238, 260, 284

Cam: 192, 237; for barrel bobbin, 589

Camera: cheap enlarging, 621; stand,

Carboniferous ichnology, 564

walking-stick, 620

Campanus, 540

Candles, hollow, 42

Carburetter, gas, 352, 424

Cardboard globe, 213

Carriage: boat, 526; sail or boat, 541

Carriage wheels, loose-running, 84

Casements, 525

Catch-bore, 116

Caterpillars, curious, 102

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, 66; 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

Couplings for railway carriages, 440
Craters north of Posidonius, 516
Ctenodus: 112; obtusus, 160
Cure for smoky chimneys, 349
Ctenoptychius obtusus, 469
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
Drain-pipe, 492

Drawing: instrument, Midelton's, 560;
isometrical, 66; templates, isometrical, 60
Drill, vertical, 91, 309, 445, 549
Drilling machine, 595

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

Lathe: 445, 454; an inexpensive, 182, 516;
chucks for, 622; conversion, 256; divid-
ing apparatus, 277; file, new, 445; heads,
897; 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
Leclanche's battery, 228

Lenses, properties and powers of, 121
Levander's universal equatorial stand, 336
Lifting pump, 115

Light, zodiacal, 273

Lighting by petroleum, 365
Lime-light, 215, 259

Linné, 613

Live-box, Blankley's improved, 437
Locomotive boiler, tubeing, 858

Locomotives, improved sand box for, 468
Low-water detector, 420

Lunar cosmology, 108, 252, 330
Lunar crater Gassendi, 225

MACHINE: adding, 488, 540; boot-
cleaning, 597; Boult's moulding, carving,
and panelling, $25; drilling, 595; for
knitting stockings, 413; for laying-out
doors, sashes, &c., 29; hydro-electric,
324; ice, 619; improved brick-making,
56; screw-blank, 392; shaping, 252; silk-
winding, 308; small milling, 185; sugar
cutting and chopping, 234
Magie lantern, 286

Mathematics of limits, 565

Measuring, &c., 120, 142

Mechanical finger, Zentmayer's, 118
Medical coil, old, 143

Melting brass; simple furnace for, 60
"Mermaid" washing-machine, the, 149
Metronome, 549

Micro-polariscope, cheap, 373, 425
Microscope: binocular, 125; finding slide
for, 556; illumination of binocular, 344;
moulding for the, 147; new form of
binocular and eyepiece, 612; slides,
cabinet for, 238, 260

Midelton's drawing instrument, 560
Milling machine, small, 185, 252

Pile, voltaic, 225

Pipe elbows, 507

Plane, mounting diagonal, 492
Planing head for lathe, 373
Plato's triangle, 187
Plough, steam, 229

Pneumatic: levers for organs, 524; ques-
tion, 329

Polariscope: 428, 451; a cheap, 108; micro-
337, 425

Posidonius, craters north of, 516
Poultry feeding, 381
Power: applying and controlling,
windmill, 528

Science question, 44

Scraping slide-valve face, 452
Screw, launch steam, 321
Screw-blank machine, 392

Screw-cutting: 20; apparatus, 328; by hand,
517

Screw-propeller, 18

Horsnaill's diamond, 28

Mitre: block, 373; box, 253
Model engine, horizontal, 212
Modern projectiles, 421

Moon hypothesis, Symond's, 371
Moon's surface, recent observations of, 615|
Moonlight evenings, telescopic work for,

578

Printing press; 373; how to make a good,
273; Wilkinson's, 404

Problems: 18, 44, 90, 427, 596, 597; geo-
metrical, 69, 85: optical, 527
Projectiles, modern, 421
Propeller, screw, 18
Properties and powers of lenses, 121
Pump: 351; lifting, 115

Purifying water in Hamburg, 348
Pygopterus, and a new fish tooth, 445

QUADRILATERAL figure, 526

Mourning paper, 89

Musical sounds, on the vibrations which
give rise to, 197

163; pueumatic, 329; science, 41
Quicksilver, 285

RAILWAY carriages, steam brake for,

516

Railway: couplings, improvements in, 440:
wheels, coning of, 540
Rainbow, 300
Raising water, 132

Ram, hydraulic, 176, 420

Readings from the Globes, 13; 225
Recording steam-gauge, 463
Regulator for egg-hatcher, 259
Removable finder for telescope, 497
Reptile: rib, 257; tooth of unknown, 592
Reptiles: or mammals, coal-measure, 224;
vertebræ of coal-measure, 321, 592

RHIZODUS HIBBERTII, 177
Rifles, breechloading, 127
Ritrecina, 285

Road steamer; 297; spring tires for, 349
Roasting jack, 259

Rocket making, 109, 116

Rockets, 321

Rocking-chair, Palmer's patent, 368
Roller skates, 421

Roofs, iron, 84

Rope spinning, 249

Rotation, cause of the earth's, 106
Ruptured feed pipe, 164

SAFETY boiler, sectional, 536

MECHANIC

Testing specula, 589
Thaumatrope, 22
Thermo-barometer, 108

Theory, sources, and application of elec
tricity, 1, 76, 290, 435

Tires: for road steamers, 349; indiarubber,
fixing, 476, 589

Tool holder, 328

Tooth: found at Hetton colliery, 300; of
Amphisaurus amblyodus, 541; of iguano-
don, 208; of unknown reptile, 592
Trap, American moth, 214
Treadles, bicycle, 321

Tree stubber, 187

Shaping machine, 252

Showing opaque objects on disc, 478
Silk-winding machine, 308
Silver coins of England, the, 57, 389
Siphon, 91

Size and strength of boilers, 571
Skates: 499; roller, 421
Skew plane, 574

Slide-rest: turning with, 572; vertical, 22
Slide-valve face, scraping, 452
Smoky chimneys, cure for, 349
Solids comparative, 71

Sounds, vibrations causing musical, 197
Specimens of turning, 580

Speculum testing, 589; working, 108, 225
Springs, velocipede, 579
Square gasketing, 621

Stand: equatorial, 237, 332; Levander's
universal equatorial, 336; telescope, 37
Starlight evenings, telescopic work for, 385,

Saffron, 493

in, 608

Telescope: removable finder for, 497; stand,

37, 249; the, 561
Telescopic reflector, 285
Telescopic work: for moonlight evenings,
578; for starlight evenings, 385, 554
Templates, isometrical drawing, 60

Trueg's heliorama, 53

Tubeing locomotive boiler, 358
Tubs and pails, bottoming, 571
Turbine water-wheel, 285

Turnbench, Swiss, 469

Turning: short screws, 273; specimens of
580; swash-plate, 429; with the slide-rest
572

Vertebræ of coal-measure reptiles, 321, 592
Vertical drill, 91, 309, 445, 549
Vibration, 252, 301
Vibrations which give rise to
sounds, 197
Vice, flat, 568
Violin, the, 130, 164
Voltaic pile, 225

WALKING-stick camera-stand, 620
Washing-machine, the "Mermaid,” 149
Washer and wringer, clothes, 80
Watch jewelling, 137

Water: distilling, 197; motion of, 159:
purifying in Hamburg, 348; raising, 12
Waterpipes, 449

Water-wheel, turbine, 285

Weather, science of the, 457, 484

Weight and lever of safety-valve, 501
Wenham's binocular, 165

Wheatstone's improvements in telegraphy

618

Wheel-shafts, keys for, 344

Wheels: cutting teeth of, 36, 113, 184, 204
Whitworth lathe, 613
loose-running carriage, 84

Winding: electro-magnet, 431; frame, cam
Wilkinson's printing press, 405

for barrel bobbin on, 589

Windmill; for turning, pumping, &c., 12,
108; horizontal, 516; novel, 180; power

528

Window-sash improvements, 468
Wire covering, 573
Wood-carving machine, 5

Wood sections, cutting, 205
Working, speculum, 108, 225
World, the; its formation and antiquity,
Writing, secret, 388, 411

5, 101

586; three-inch, 251

Acrolepis, mandible of, 397

Activity, lunar, 423, 446

Adding machine, 540

"Adept," a few words to, on sound, 274
Aerolites, 329, 398

Aerostatics, 448

Ether, queries respecting, 275

Age of man, the, 110

Ailments, bodily, 254

Air, resonant masses of, confined in cham-
bers, 35

Air-compressing pump, 41

Air-pump: cocks for, 206; Mr. Rudge's,
39; oil for, 88, 130

Algebraic formula, Mr. Proctor's, 426
Allyle, 471

Aluminium mirrors for reflecting tele-
scopes, 64, 281, 300

Amateur lathe work, 305

American organ, one-half an accordion, 183
American reed-organ, harmonium, and
their congeners, 13

Ammonia, is cyanide of, a top-dressing
manure? 107

Amphisaurus amblyodus, tooth of, 540
Anaesthetic application for burns and
wounds, 299

Analysis: 326; of cupric ammonia and
clays, 475; of glass, 41; of minerals, 251;
of silver and lead ore, 474; quantitative,
inorganic and organic, 207; spectrum, 12
Analysing iron and steel ores, 614
Angular measurement, 86
Anthropodontoides Bailesii, 427
Antiseptics, 449

Apartments, warming, 520, 568
Aphelia of the planets, 585
Apology, erratum and, 129

Apparatus: cheap gymnastic, 359; divid-
ing, 58, 88, 111, 188; for burning a mix-
ture of coal-gas and atmospheric air,
276; hot water, 496, 542; screw-cutting,
328, 378
Apparent diameter of the sun, 328, 348,
400, 420

Applying and controlling power, 250
Aquarium, rustic, 564

Arcturus, heliacal rising of, 371

Armature, 209

Arrears, a few, 89

Arrowroot, Maranta, 82

thermo-, 108, 137, 227
Baskerville, Mr., and the steam-engine, 42
Basses for chamber organs, 347
Batteries: 209, 299, 424, 446; chain, 348;
galvanic, 424; manganese, 615
Battery: bisulplate of potash, 276; connec-
tions, 41; improved Daniell, 304
Leclanché, 228, 590; manganese, 18, 134,
180; new arrangement of Daniell's 568;
new cast-iron, 207, 299; new form of, 137,
204; plates, gauze negative, 110; sulphate
of mercury, 110
Bedrooms, rainwater taps in, 184, 230, 276,
353, 378

Beer, picric acid in, 61
Bees, preservation of, 227

Bicycle: 874, 422, 491, 544, 615; construction,

257, 450; construction fallacies, 374, 396,
450; improved, 396; riding, 15, 37, 111,
184, 322; steering the, 321; step. 15, 85;

step, everybody's, 206, 258; treadles, im-
proved, 321; tricycle v., 450, 471; wheels,
471, 491, 521, 569, 615
Bicycles and their pace, 85
Binary stars, catalogue of, 208
Biological, 110, 162, 210, 280, 253, 306, 353
Bismuth, 161

Blockhouse, an almost impregnable, 60
Blowpipe and mineralogy, 89
Boat carriage, 541
Bodily ailments, 254
Boiler explosions, 209

Boiler priming: 16, 58, 61, 84, 107, 129, 225,
301, 324, 399, 447; grease cup and, 469;
prevention of, 400

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

Brass, simple furnace for melting, 60, 107
Bright varnish for carved work, 399
British Association, 619

Centre of gravity of semi-ellipse, 422, 494
Chain: batteries, 348; coupling, 348
Chair and carriage-wheel construction, 320
Chamber organ basses, 347
Chapter-house, Salisbury, 279
Characteristics of the Musci, 587
Charges, Post-office, 185
Cheap, simple, and good goniometer,
205; specula, 569
Chemical: 494, 618; and physical, 471;
nomenclature, 447
Chimneys, cure for smoky, 449
China grass, 66, 566

Chinese harmonium, 61
Choice of telescopes, 87
Chronological vagaries, 272

Chuck: four-jawed, 588; geometric, 156,
233, 255; grip, 282, 327, 375; oval, 160;
useful, 180, 209
Circle: quadrature of, 130, 473; squaring

the, 40, 82
Circle-squarers, our, 186
Cladodus elegans, 403
Clay retorts, 326

Clock: electric, 177, 231, 256, 273; how to
make an 8-day, 133; Strasburg, descrip-
tion of, 135, 181

Cloud vesicles, 468

Clouds, vesicular theory of, 449
Clutch, the friction, 12
Coal-gas as a source of heat, 423
Coal-measure reptiles: or mammals, 224;
vertebræ of, 321
Coal-mines, ventilation of, 210
Cocks for air-pump. 206
Cod-liver custard, 305

Coil: Dyer's, 86; 134: Induction, 16, 154,
160, 376; medical, 62, 86, 379; resistance,
543
Coin, Indian, 161

to Mr. Purkiss, 467
Burner for lantern, 209

Burns and wounds, anesthetic application
for, 299

Butterflies' tongues, mounting, 206

in, 474

Colony, ENGLISH MECHANIC, 281, 330
Colouring white calf, recipes for, 65
Colourless varnish, 349
Comfort, little helps to great, 450
Commerce of the globe, 422

the lathe as a means of, 329

Artillery, modern, 474, 517, 615
Asking queries, 355

Assay: the lead, 179, 203; the silver, 278,
424, 570

Assaying: copper ore, 278, 377; wet copper,

447

Astronomer, to a young, 466
Astrono-meteorology, 616
Astronomical, 84, 201, 417, 443, 490, 569,
587; chiefly, 254; diagrams, 132; jargon,
466, 544; literature, 587, 612
Atmosphere, lunar, 15
Atmospheric pressure, 282
Atoms: sizes and weights of, 278; ulti-
mate, 305

Auric chloride, picric acid and, 34
Aurora: 208: borealis, 61, 155
Australia, a voice from, 203
Averages, meteorological, 423

B. A": 248; and Euclid's faults, 471;
and Mr. Proctor, 300; on light, 320, 377,

895

Tags, gas, 178

Campanus, 540, 587

Can smoke be consumed profitably? 517
Canada v. the Union, 81, 107
Canada balsam, 520, 618; and the micro-
scope, 378, 564, 618; mounting in, 474
Captain, the loss of the, 34, 568
Carbolates, 282, 399

Carbolic acid: as a cure for consumption,
445; in otorrhea, 299; mounting in, 520
Carbonate of soda, 111
Carbonic acid, 40
Carboniferous ichnology, 564
Carburetter, gas, 352, 424, 466, 563
Carriage wheels, and articles of furniture
without joints, 111, 320; loose-running,
84, 112

Carved work, bright varnish for, 399
Cask-gauging, 131, 203, 227, 257, 282
Casting delicate objects, Indian mode of,
569

Cast-iron, and its treatment, 229; battery,
new, 207, 299
Catalogue of binary stars, 208
Cause of the earth's rotation, 85, 58, 65, 106
Celestial spectroscopy and the telescope
generally, 152, 201
ganese. 256

Compensation balance, the, 227
Composition: grinding-wheel, 324, 377;
milk, 618

Compressed air and deafness, 377
Concerning balloons, 469, 543, 619
Conical wheels, 355

Cuprous oxide, 178

Cure for smoky chimneys, 349
Curiosities of mathematics, 186
Curious growth, 256

Curvature of rainbow, 371, 426, 466
Custard, cod-liver, 350

Cutting: teeth of wheels, 36, 113, 184, 204
tools, speed of, 299
Cycloptychius, 521

Cylinders and passages, steam, 255
DANIELL battery: improved, 304; new
arrangement of, 449, 497, 568, 590
Dark lines and Newton's rings, 87
Davis, Mr., and Mr. Goffin, 38, 111, 255,

of

Domestic: organs, 88,

purifler, 250,

Doubtful scapula, 353

Drain: 423; pipe, 492

136,

183; water

Drawing: small objects, camera for, 227,
301; templates, isometrical, 60, 87
Drill, vertical, 445
Driving, locomotive, 41, 106, 129
Drilling iron, 254
Dual arithmetic, 38