590 



NEGRETTI AND ZAMB11A, HOLBOEN VIADUCT, B.C., 



Planimeter, Amslers, 1260. 

 Integrator, Amslers, 1261. 

 Plate Boxes, page 543. 

 Cleaner, 3258. 

 Cleaning Liquid, 3395. 

 Fiaraesfor Cameras, To Order. 

 Phonoscope, 3144. 

 Photometer, Sabine's, 3305*. 

 Plane Table, 1710. 

 Piezometer, 3148. 



Plate Boxes, Holders, Pneumatic, page 543. 

 Plated Lockets, supplied To Order. 

 Platinum and Silver Chain, for Galvanic 



experiments, 2568. 

 Goods, 2282 to 2285. 

 Plates, Vignette, 3288. 

 Platinized Silver, 2580. 

 Plotting Scales, 1573. 

 Pluviometers, pages 82 to 89. 

 Pneumatic Apparatus, sets of, To Order. 

 Plate Holders, 3254. 

 Trough, Berlin Porcelain, 2031. 

 Metal, 2288. 



Drop Tubes, 2033. 



Pocket Anemometer, pages 99 to 101. 

 Alt Azimuth Instrument, 1202. 

 Compasses, Pillar, &c., page 337. 

 ., Condenser, 2859. 

 Galvanic Coil, 2782. 

 Hygrometer, 96. 

 Hydrometers, page 453. 

 Hypsometric Apparatus, page 94 (Dr. 



Hooker's). 



Rain Gauge, 115. 

 Saccharometers, 452. 

 Pocket or Portable Satchel Camera, 



pages 533 to 527. 

 Pocket Dividers, 1538. 



Barometers, pages 23 to 26, and 29. 

 Compasses, Mariners', page 314. 

 Napier's, 1539. 



Globes, page 328. 

 Magnifiers, page 223. 

 Measuring Tapes, Spring, page 302. 

 Rules, 339, and page 347. 

 Sets of Drawing Instruments,page 334. 

 Sextants, page 310. 

 Spectroscopes, 1077. 

 Telescopes, page 242. 

 Thermometers, page 155. 

 Polariscope, Biot's Black Mirror, 1052. 

 Duboscq's Soleil's, 1055. 

 for Liquids, 1055. 

 Laurent's New Shadow 



Saccharometer, 1056. 

 . Eolipile for use with above, 1058. 



Polaiiscope, Le Count's Mirror, To Order. 



Malus's, 1051. 



for Sugar, 1055. 



Oxy-hydrogen, page 282. 

 Reflecting, 1051. 



Tourmaline, 1050, 1054. 



Woodward's Table, 1053. 



Field's Differential Ratio Micro, 



928. 



Polarising Apparatus, for Microscopes, 956 

 to 959. 



Crystals and various Objects, 

 pages 297, 280. 



Eye Piece, 1063. 

 Polemiscope, 756. 

 Polishing Buffs, Made to Order. 

 Polyorama, 758. 

 Polyps Trough, 985. 

 Porous Cells, 2639. 

 Portable Forge, page 401 and 402. 



Laboratories, page 409. 



., Steam Engines and Boilers, 

 page 211. 



Stills, page 406. 



Electrical Alarm, pages 460 to 465. 



Frames for Lantern Screens, 1793. 



Air Meter, for Mines, &c., page 99. 

 Porcelain Retorts, 2051. 



Dipping Baths and Dishes, 



pages 542 and 453. 

 Pourettes, 2041. 

 Port Lamp, Ship's, page 323. 

 Portrait Lenses, page 517. 



Show Frame, Made to Order. 

 Position Micrometer, 879. 

 Positive and Negative Electricity explained, 



page 449. 

 Potash Apparatus, Liebig's, 2137. 



Mitscherlich's, 2158. 



Pipettes, 2037. 

 Pouring Glasses, 3239, 3109. 



Bottles, 3237. 

 Powder House, 2473. 

 Praximoscope, 755. 

 Precipitating Glasses, 2012, 2029. 



Philips's, 2099, 2027. 



Pressure Boards, 1785. 



Frames, page 546. 



Gauge, King's Gas, 3083. 



Gauges, Various, Steam, &c., 



See Gauges. 

 Presselles or Pushes for Electric Bells, 



page 464. 



Priestley's Thunder House, 2471. 

 Print Lenses, page 222. 



Machines, Diagonal, 729. 



