544 



CENTRAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



Page 

 Opaque Fused Silica Combus- 



tion Boats ................ 162 



Opaque Fused Silica Combus- 



tion Tubes ................ 163 



Opaque Fused Silica Cru- 



cibles ..................... 174 



Opaque Fused Silica Evapo- 



rating Dishes ............. 186 



Opaque Fused Silica Flasks.. 



...................... 246, 247 



Opaque Fused Silica Rods... 443 

 Opaque Fused Silica Sugar 



Dish ...................... 188 



Opaque Fused Silica Tannin 



Dish ..................... 188 



Opaque Fused Silica Test 



Tubes ................. 163. 488 



Opaque Fused Silica Tubing. 



163. 443 

 Optical Pyrometer, Scimatco 



421. 422 



Optical Pyrometer, Shore's.. 422 



Ore Crushers 175 



Ore Grinders 176-177 



Ore Samplers 432. 433 



Ore Sampling Pans 433 



Organic Analysis Furnace.. 261 

 Organic Combustion Furnace 261 

 Organic Matter Determina- 

 tion Apparatus 450 



Organic Matter Jar 461 



Orsat Gas Analysis Appara- 

 tus 277, 279-281 



Orsat Gas Bulbs 279. 428 



Orsat-Fischer Gas Analysis 



Apparatus 279 



Orsat-Lunge Gas Analysis 



Apparatus 279 



Orsat-Muencke Gas Analysis 



Apparatus 279 



Osborne's Lecture Apparatus. 333 



Osmosemeter 401 



Ostwald Apparatus ..396-399, 403 

 Ostwald Calomel Normal 



Electrode 397 



Ostwald Capillary Electrom- 

 eter Tubes 399 



Ostwald Conductivity Cell... 396 



Ostwald Gas Electrodes 398 



Ostwald Pipettes 403-405, 508 



Ostwald Pipette for Folin 



Apparatus 508 



Ostwald Toluol Regulators.. 501 

 Ostwald Viscosity Determina- 

 tion Outfit 403 



Outfit for Blowpipe Analysis 94 

 Ovens for Asphalt Testing... 



21, 23, 387 



Ovens, Baking 381. 382 



Ovens, Constant Temperature 



383-385 



Ovens, Drying 383-388 



Oven for Melting Point of 



Hard Pitch 21. 23 



Ovens, Paraffine Embedding. 



393-395 



Ovens, Vacuum Drying 388 



Oven Thermometer, Bake... 



255. 493 



Overflow Pipettes 404 



Oversleeves 14 



Oxone 288 



Oxygen Bomb Calorimeters. 



127. 128 



Oxygen Bomb Calorimeter. 



Adiabatic 128 



Oxygen Cylinders 276 



Oxygen Determination Appa- 

 ratus 277, 279-283. 293, 294 



Oxygen Flasks 248 



Oxygen Gas 275 



Oxygen Gas Generators. .288. 427 

 Oxygen Generating Appara- 

 tus 288, 427 



Oxygen Generating Retorts. . 427 



Oxygen Tanks 275, 288 



Oxygen Tank Gages 275 



Oxyhydrogen Blowpipes 93 



Ozonator, Electric 389 



Ozone Apparatus, Siemen's... 390 

 Ozone Tube 390 



Page 



Palm Glass 414 



Palm Oil Soap 354 



Palmquist Gas Analysis Ap- 

 paratus 279 



Pans for Balances 61 



Pans, Baking 263 



Pan for Briquettes (Cement 



Testing) 132 



Pan, Cement 132 



Pans, Dissecting 190 



Pan, Gold Washing 298 



Pan, Grain Sample 302 



Pans, Incinerating, Platinum 409 



Pans for Ore Samples 433 



Pans, Sample 302 



Pans, Sifting 441, 442 



Pans, Soil 445, 461. 455 



Pans, Washing 253. 298 



Pantograph 390 



Paper, All Kinds 



17, 95, 96, 169. 



185, 202, 228, 230, 238-241, 

 329, 333, 337, 361, 380, 390. 391 

 Paper, Adams Fat Extracted. 390 

 Paper, Asbestos 17 



Paper. Blue Print 



390 



Paper, Carborundum ........ 390 



Paper, Congo Ked 



390 



Paper, Cross Section 169 



Paper, Dialyzing 186 



Paper, Drawing 202 



Paper, Drying, Botanical. . .95. 96 



Paper, Emery 230 



Paper, Emery, Metallographic 337 

 Paper, Fat Extracted for Milk 



Analysis 241, 361 



Paper, Filter 238-241 



Paper, Glazed 390 



Paper, Glazed for Kymograph 329 



Pads, Asbestos 17 



Pail for Waste 390 



Pails, Weighing 284 



Palladium Tube for Gas Anal- 

 ysis 290 



Paper, l_,ens, Japanese ....... 333 



Paper, Litmus ........... 390, 391 



Paper, Logwood ............ 391 



Paper, Mounting, Botanical.. 96 

 Paper, Paraffine ............ 391 



Paper, Parchment .......... 391 



Paper, Plant Description ..... 96 



Paper, Pole indicating ....... 228 



Paper, Pressing, Botanical. 95, 96 

 Paper, Sand ................ 391 



Paper, Turmeric ............ 391 



Paper, Water Indicating ..... 38U 



Paper, Wrapping ........... 391 



Paper Bags ................. 391 



Paper Boxes ............ 108, 241 



Paper Racks ................ 391 



Paper Scales ................ 435 



Paper Scale Thermometers.. 496 

 Paper Shears ............... 440 



Paper Tester. Mullen ........ 391 



Paper Testing Machines. .391, 489 

 Paper Thickness Gages.. .391. 392 

 Paraffine Candles ........... 507 



Parafnne Embedding Baths.. 

 ...................... 392, 393 



Paraffine Embedding Box ---- 354 



Paraffine Embedding Ovens.. 

 ....................... 393-395 



Paraffine Embedding Table.. 354 

 Paraffine Receptacle for In- 

 cubators .................. 39i 



Paraffined Paper ............ 390 



Parallel Jaw Clamps ........ 150 



Parallel Rules .............. 202 



Parker's Deflagration Spoon. 18< 

 Parker's Glass Cutting Tool. 295 

 Parr Adiabatic Calorimeter.. 12i 

 Parr Carbon Apparatus ...... 12( 



Parr Coal Calorimeters. . .126-128 

 Parr Gas Calorimeter ........ 283 



Parr Oxygen Bomb Calorime- 

 ter ........................ 12 



Parr Standard Calorimeter.. 121 

 Parr Sulphur Photometer.... 121 



Parr Weighing Bottle ....... 10' 



Paste, Library .............. 334 



Paste, Soldering ............ 46 



1'aste Board Boxes ....... 108. 241 



Pasteur-Chamberland Filter 

 Cylinders ................. 237 



Pasteur - Chamberland Pres- 

 sure Filters ........... 236. 23 



Pasteur Dishes ............. 18 



Pasteurizing Outfit .......... 36 



Pasteurizing Thermometer . . 36 

 Pastille Press ........... 128. 414 



Pauli's Calomel Electrode... 397 

 Pauly's Receiver ............ 426 



Payne's Platinum Dish ...... 409 



Pebble Mills ............ 179, 180 



'eerless Automatic Water 



Stills 195 



'eligot Calcium Chloride 



Tubes 124 



eligot Potash Bulb 413 



ellet Press for Calorimeter 



Work 128, 414 



'ens, Drawing 202 



'encils, All Kinds 202. 395 



'encils, Drawing 202 



encils, Litmus 395 



'encils. Wax 395 



'encil Brushes 109 



'encil Compasses 163 



'encil Sharpener 395 



'enetration Needle, Asphalt. 24 

 'enetrometers, All Kinds.... 



24, 25, 133. 451 



^enetrometers, Asphalt ...24. 25 



enetrometer. Schutte 25 



^enetrometer. Soil 451 



enetrometer, Vicat's for Ce- 

 ment 133 



enfield Application Goniom- 

 eters 298, 299 



enfield Contact Goniometers 



298, 299 



ennock and Martin Crucible 171 

 ennock and Martin Sulphur 



Apparatus 171 



Pensky-Martin Flash Point 



Tester 376 



ensky-Martin Oil Tester.... 376 

 D entane Lamp, Harcourt.... 291 

 Pentane Thermometer for 



Low Temperatures 491 



Peptone, Silk 82 



Pepys-Berzelius Gas Holders. 288 

 D ercentage Scale for Cement 46 

 Percentage Tube for Haemo- 



tokrit 134 



Percolation Apparatus, Mc- 



Call's 451 



Percolators 395 



Percolator Bottles 327 



Percolator Jars 327 



Perforated Disks for Caldwell 



Crucibles 172 



Perforated Porcelain Plates 



for Funnels 238 



Periodic System Chart 144 



Pestle, Rubber 451 



Petterson-Palmquist Gas Ap- 

 paratus 279 



Petri Dishes 181 



Petri Dish Covers. Porous 



Clay 181 



Petri Dish Holders 181 



Petroleum Inspectors' Man- 

 ual 377 



Petroleum Testers 373-380 



Petrological Collections. .364, 365 



Phenol Tube 259 



Phenol-Sulphone - Phthalein 



Ampoules 156 



Phillips Beakers 246 



Phosphor Bronze Ribbon.... 525 



Phosphor Bronze Sheet 525 



Phosphorescent Minerals . . .. 426 

 Phosphoric Acid Flask, Volu- 

 metric 250 



Phosphorus Determination 



Apparatus 134-141, 248, 427 



Phosphorus Electric Centri- 

 fuges 135-141 



Phosphorus Flasks 248 



Phosphorus Tubes. Blair's 



Reductor 427 



Phosphorus Tubes, Goetz.135. 141 



Photographic Trays 504 



Photometers and Accessories. 



126, 155, 290. 291 



Photometers. Gas 290. 291 



Photometer, Hess-Ives 155 



Photometer, Sulphur, Parr... 126 



Photometer Sight-Box 290 



Photometer Standard Incan- 

 descent Lamp 331 



Photometric Candles 292 



Physical Balances. ...44, 49, 61-55 

 Physical Chemistry Appara- 

 tus 396-403 



Physiological and Clinical 



Apparatus 82-87 



Piano Wire 522 



Picks, Mining 303 



Pincnometers 24. 104. 105 



Picture Wire 522 



Pill Boxes 108 



Pillsbury Boxes 349 



