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ENGLISH MECHANIC

AND

WORLD OF SCIENCE.

WITH WHICH ARE INCORPORATED

"THE MECHANIC," "SCIENTIFIC OPINION," AND "THE BRITISH & FOREIGN MECHANIC.”

ILLUSTRATED WITH NUMEROUS PRACTICAL ENGRAVINGS.

VOLUME XXXII.

LONDON:

OFFICE: 31, TAVISTOCK STREET, COVENT GARDEN, W.C.

SOLD BY ALL BOOKSELLERS AND NEWSAGENTS IN THE KINGDOM.

1881.

THE NEW YO..
PUBLIC LIBRAR

ASTOR, LENOX AND TILDEN FOUNDATIONS,

R 1899 L.

PRINTED BY BRADLEY AND COMPANY,

12, 13, AND 14, FEITER LANE, London, E.C.

INDEX TO VOL. XXXII. ENGLISH MECHANIC.

ABSCONDED tenant, 190
| Amaieurs' tools and motive power for, 3, Ash, soda, 145

Bede, latie, 455
Accident: Bishop's Stortford, 172 ; Blea 126, 226, 292, 414, 632

Assimilative organs of plants, 416

Bee stvarming extraordinary, 254
Moor Tunnel, 188: Nine Elois, another, Amber : 17 ; to join, 218

Asthmatic tendency, 430, 452, 475, 501, 322, Bier: German, 693; Luger, 476; stale,
690; Surrey Canal Junctions, 565
America: English tin-workers in

670, 593

95
Accidents: at Berwick and Wennington, prodigious magnifications in, 84

Astigmatism, 91, 138, 188, 211, 237, 303, Beer-pipe joints, 623
13, 114, 162, 188, 237 ; at Crewe, 590; at American: expresses, 237 ; leather, sticky, 402, 424, 447

Bees : mathematical, 69; providence of,
Lille, 13, 38, 89, 139; Kibworth, 162, 168 ; locomotives, new, 223; microscopy, I | Astronomer Royal for Scotland, F.R.A.S. 180
250; Leeds, 449, 497, 519, 541; near 562; organ matters, 454, 455, 476, 501, and the, 277, 298, 299, 348

Beetroot cultivation, 46, 94
Primrose Hill, 37 ; Penilee and Vauxball, 527, 574 ;-two manual, 429, 451, 475, Astronomical : 138, 589; eyepieces, 9, 72, | Bell, electric: faulty, 265, 285 ; indicator,
200; Prestbury, 325, 353, 375, 423, 449, 501, 521, 545, 569, 593, 617; trains, 300; 298, 311; notes, 78, 174, 270, 388, 4 452
497, 519; railway, 67, 114; Rutherglen, | v. English watches, 91; view of the del 581; photography, 422; refraction, 417; Bell violin, 469
161
phosphorising process, 435 ; views on society, the Royal, 539, 588

Bellows: acoustic, 331; body for camera,
Accountant, chartered, 284, 307

high speed, 180; watches, 63, 113 | Astronomy for the million, "illustrated," 18, 356; organ, 427
Achard electric brake, 146
Ainmonia : 19; improvements in the pro 348

Bell's telephone, 147, 168, 217
Achromatic: condensers, 84; object-glass, duction of, 80

Atmosphere, bacteria in the, 106

Bells: Bright's, 331 ; electric, 696; pnou-
182, 444, 478, 494
Amplification, microscopical, 574
Atoms, mean free path of, 17

matic, 218; sound of, in contact with
Achromatism af eyepieces, 468, 566, 592,613 Analysis : blowpipe, 335; chemical, 44, 94, | Attic observatory, 318, 359

liquids, 492
Acme club skates, 193

97, 121, 166 ; ferric pyrophosphate and, Attraction : 376, 401, 449, 469, 565, 615; of Belts : driving, 193, 281 ; - crossed, 852,
Acoustic bellows, 331
696; milk, 279; of mortar, 450; of gravitation, 545

381 ; Jupiter's, 157
Acoustics, 145, 167, 191
mineral water, qualitative, 65, 215; of Aurora borealis, the, 277, 516

Bench, shoemaker's, 20
Actinjc : light, artificial, 335; rays, 22, 72 oily mixtures, 470; spectrum, as applied Australian : opals, 370; telegraphs, 383 Bench-knife. ji iner's patent, 153
Addendum to the handbook of double to solar system, 584 ; water, 70, 218, 210, | Automatic coupling, 503, 521, 571

Benzolint exon, 401, 449, 497, 518, 548, 563,
stars, 396, 446
281, 305, 310; wine, 70
Axiom of parallels, 543

622
Address, & model, 207
Anatomical specimens, preserving, 502 Azaleas, transplanting, 48

Bei wick acrilents, Wennington and, 13,
Adjusting : equatorial, 207, 219, 241; ob Ancient bones, 570

114, 162, I
ject-glass, 357
Anästhetic, Edison's, 79

Bichromate cells, 92, 406, 423, 4:8, 451,
Adoption, legacy duty and, 405
Anemometer, 307

522
Advertising : in the Times, 444; unscru. Aneroid, recording, 191

BABBAGE'S: calculating machine, Bicycle: Devon safety, 472, 518, 543 ;
pulous, 216
Angle of lathe mandril, 623

70, 109; difference engine, 157

ideas, 17, 45; repainting, 451; repairing,
Aerial: flight, 61, 88, 112, 160, 556; Davi-Aniline: cycloids, 370; ink, 279, 286 Bacillaria paradoxa, 138

572; tires, mending, 2€1. .
gation, 235, 424, 550, 623; photography, Animals : domestic, homeopathic treat-Background, photographic, 166, 191, 574 Bicycles : improvements in details of,
ment of, 95 ; mental powers of the Back-rest, cutter-bar and, 856

185; upbill, 95, 119, 166, 215, 281, 25,
Æstheticism, colour or philosopher's white lower, 228

Bacteria in the atmosphere, 106

3:29, 354, 379
and, 615
Ankle, sprained, 18
Baize door, 146

Bill, heavy lawyer's, 18
Atrica, gravestone in, 219, 479, 502

Balance : adjustment, 406; for chemical Binocular: defective, 383, 406; inicroscope,
Agricultural : education, 5; engine, 430 Ansell's fire-damp indicator. 304. 277

students, home-made, 65, 137 ; tubular, full aperture prism for the, 278, 352 ;
Ayue germs, 358
Antares, 35

403

microscopes, monocular and, 421, 469
Air: of the ground, carbonic acid in, 369 ; | Anthracite, the steam yacht, 131

Balance-spring, 166, 239

Bird, mechanical singing, 39, 92, 136, 211,
organic matter and infection in the, 173; Anthracite coal, 5

Ball: bearings, Bown and Hughes, 203; 280
pressures, 18, 42, 72; regulator, 469 Anthropometric committee, report of, 5 steel, turning, 244, 264

Bird flight, mechanics of, 394
dir-engine for streets and railways, 140 Anti-incrustators, boiler incrustation and, Balloon, model, 96

Birds, flight of, 14, 38, 66, 68, 86, 111, 112,
Air-mutor, compressed, for boat, 454, 501, 200

Ball's division, 378, 444, 468, 194, 516, 539 132, 134, 158, 186, 213, 279
545, 570, 617
Aperture and separating power of 0.g., Band saws, 45

Birmingham's red star in Aquila, 59
Air-pump: 18, 117, 191, 243, 283, 311, 403,

Bank clerks, 71

Birth, legal proof of, 121, 166, 216
428, 501 ; for engines, 41, 121
Apertures : exceeding 180° in air,
Barium sulphide, 144

Bishop's Stortford accident, 472
Albatross, 62, 82

Jarge telescopes, contracting, 60
Barlow lens, 22, 73

Black' for writing on white enamels, 527,
Albo-carbon gas, 401
Apology, a protest and an, 164
Barnard's spot, 421, 446, 46S

595
Alcohol: 22, 45, 69, 72, 142, 215; freezing Apparitus : cheap, 378, 404, 422, 424, 472, | Barometer: 310; scale-plate of, 73, 215, | Blacking for boiler top, 96, 120

points of water d, 252; from coal-gas, 500; drilling, 479, 550, 622, 624; medical 281 ; the glycerine, 94, 532; tubes, 146 Blacksmith's forge, 406
519,572

electrical, 549

Barrett's, Prof., experiments on clairvoy-Bladders, dressing, 194, 241
Alcoholic fermentation : in plants, 231; Apprentices : in navy, 527 ; indentures of, ance, 145

Blades of fans, 504
manufacture of yeast without, 461
624
Baths, frozen photo, 382

Blast, 501
"Aletheus" on matter, 89
Aquarium, 147

Battery: aluminium, 426; bichromate, 92, Blasting in coal-mines, 220, 242, 262, 283,
Algol: dark systems of the type of, 109, | Aquila : and Aquarius, 36; Birmingham's 46, 423, 428, 451, 522; Bunsen, 575, 330, 404, 450, 474
158
red star in, 59

622;- improvement of the, 260; carbons, | Blea Moor tunnel accidant, 188
Alloys, estimation of copper in, 520 Arc: chord of, 95; described by pendulum preparing, 550, 595; choice of, 146; Le Bleaching : 452: feathers, 74: fern fronds,
Almacantar, the, 418
regulating, 239 ; length of, 95

clanché, 221, 243, 264, 265, 283, 285, 307, 219; grass, 355; tallow, 550
Altair, 37
Arithmetical : 548; frames, 550

648, 549, 572 ; non-constant, 74, 143 ; of Blinds, painting Venetian, 406
Altazimuth equatorial, 36, 59, 110, 157, | Army, buying out of the, 479, 502

14,400 cells, 500 ; power, 19, 503; -con Blood, 571
192, 207, 256

Arsenic, chemical cause of poisonous stant, 263, 334 ; secondary, 108; sulphate Bloomsbury to Brompton, from, 9
Altitude: 'of the sun, 256, 268; sun's de nature of, 124

of mercury, 406, 423; weak, 22, 73; | Blowpipe : 220, 262, 306, 379, 881 ; analy-
clination and, 298, 348
Art of watchmaking, 63

wooden, coating for, 549, 595

sis, 335; apparatus, pocket, 273;
Altitudes, equation of equal, 298, 569 Artificial: actinic light, 335; horizon, 298; | Beam, load on, 573, 595

arrangement, bandy, 388; workers,
Alum, 406

manure, 573; teeth, 425, 567, 592
Beams, breaking weight of, 407

challenge to, 378
Aluminium : battery
Artisans' year-book, 370

Bearings, Bown and Hughés' ball, 203 Bluestone, 46, 65
5, 96, 191
Ascending lightning, 37
| Bedroom, warming, 243, 283, 381

Boards, local, 78

Annuities, 1.damp indicator, 304, 377

Bi2S flight.

494

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