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Portable drilling-machine ], 316

engines 183

boilers for '165

competitive trials of 184

compressing air by 94

draught of 187

extras on 187

misapplied " 187

packingof 186

permanent fixing of 188

prices of 185

steam-pressure for 184

forges 3^

hydraulic tools 83, 332, 353

winches , . 7^^ 372

punching-machines 330

riveting-machines 91, 333

water-engines 79, 372

Portland cement...: 412

advantages of 412

air-slaking of 419

alumina for 413

blue lias for 421

calcining of » 414

carbonate of lime for 413

carriage of 4x9, 421

casks for 419

chalk for 4:21

clay for 421

clinker 414

coke, for calcining 128

concrete made from 41 2, 420

coral used for 422

drying floors for 413

export of 419,422

fineness of 415, 416

fuel for making 128,413

German 418,421

grinding of 414

import duty on 422

kilns for burning 414

lime for making 421

limestone for 422

London-made 413

merchantable quality of. 44 5

natural compounds for 421

origin of name 412

packingof 419

prices of 419



PAGB



Portland cement, quality of 415

quick-setting 420

risks in using 416

sand mixed for testing 418

settingof 420

settling backs for ...^ 413

shells used for 422

slow-setting 420

slurry 4^5

sold by brand 418

storage of 419

subaqueous use of 420

substitutes for 421

tensile strength of 415

test-briquettes 41$

testing-machines for 418

Thames and Medway 413

uses for 223, 227, 412, 420, 422

weight of 415

Ports, coal-shipping 122

customary British 37

Pot sleepers .*... 249

Postal tel^aph tubes 86

Power accumulated by water 77

accumulators, hydrauiic...82, 329, 368

for factories, motive 60

measured by foot pounds 160, 348

natural sources of. 78, 157

of engines according to pressure 160

sale of. 74, 78, 80, 105, 115, "7

transmission of 70

utilised for electric lighting 62

Preliminary description in contracts $

Premiums, marine insurance 37

Press, Bramah 80

Pressure pumps 206

Price adjusted by percentages 25, 237

decided by experts 31

enhanced by trade-mark 20

measured by schedule rates ...i.. 21

measured by sum of money 20

Prices arranged in advance i

fluctuations in 33

follow cost of material 33

how determined, normal 33

Priming in boilers 170

Procedure, order of, in factories 64

Proces6es,subdivision of in factories, 65, 33S

Profit in factories, deferred 63



Index.
