586 



NEGEETTI AND ZAMBEA, HOLBORN VIADUCT, E.G., 



Marine Telescopes, page 244. 

 Clinometer, 1438, 1439. 

 Clinometer or Inclinometer, 1438, 



1439. 



Marquoise Scales, 1598 to 1601. 

 Marryat's Code of Signals, 842. 

 Marsh's Arsenic Apparatus, 2139. 



Vibrating Wire, 2688. 

 Martin's Microscopes, 891. 

 Mash Tun Thermometers, 286. 

 Masks, Wire, 2273*. 

 Mason's Hygrometer, page 73. 

 Massey's Patent Log, 1394. 



Sounding Machine, 1396. 

 Mast Head Lamps and Compass, page 323, 



1428, 1388. 

 Materials, Drawing, page 343. 



&c., for making Uxy-hydrogen Gas, 

 page 363. 



for Electrotype process, page 442. 

 Mathematical Drawing Instruments, pages 

 330 to 338. 



Curves, 1629. 

 Mats for portrait cases, embossed German or 



American, supplied To Order. 

 Mareographe or Tide Guage, Sir W. Thom- 

 son's, page 122, 516. 

 Marine Maximum Thermometer, Negretti 



and Zambra's Patent, 59. 

 Marriotte's Apparatus, page 476. 

 Maximum Thermometers, see Thermometers. 

 Maynooth Galvanic Batteries, 2544. 

 Measurer, Dupuis', procured To Order. 

 Measures, Comparative Tables of English 

 and Foreign (see Appendix). 



French, 1217. 



Spanish, 1222, 1217. 



Cubic Inch, page 558. 



Graduated, pages 381, 379. 

 Measuring and Weighing Machine, 3090. 



Altitudes, page 26. 



Instrument, Morriss', 1281, 1282. 



Chain, Gunter's, 1207. 



Standard, 1211. 



Tapes, page 302. 



Ordnance, page 302. 



Rods page 303. 



Scales, page 304. 

 Mechanical Lantern Sliders andEfects,pages 



364 to 368. 

 Mechanical Powers, model apparatus of, 



pages 491 to 496. 



Medallions, Plaster of Paris, 2641. 

 Medical Apparatus, &c., page 498. 



Electrical Directors, 2400. 



Galvanic Apparatus.pages 455 to 459. 



Medical Leyden Jars, 2395. 



Magneto-Electric Machines, 2788. 



Thermometers pages 160 to 163. 



Induction Coil, Portable, 2782. 



Electricity, its use, page 458. 

 Melloni's Thermo-Electric Pile, 2725. 

 Melting Tongs, 2280, 2209. 

 Mercurial Trough, Porcelain, 2030. 



Iron, 2276. 



Meter, Experimental Gas, 3081. 

 Meter Chains, 1210. 

 Metal Ball and Ring, for expansion 



experiment, 2962. 

 Bar, Compound, 2961. 

 Foils and Wires, for combustion, 2353. 

 Bar and Gauge, 2961. 

 Metallic Barometers, Bourdon's, To Order. 



Thermometer, Brequet's 2965. 



Immisch's, 3101. 



Vessel for Radiation experiment, 



2978. 



Meteorograph, Van Rysselberghe's, page 131. 

 Meteorological Instruments, Negrettl and 



Zambra's Five Guinea Set, page 126. 

 Meteorological Instruments, Negretti and 

 Zambra's Portable Set, 123. 



Standard, page 1 to 132. 



,. Publications, 133. 



Instruments, Estimates for Sets of, 



pages 124, 125. 

 Meters, Current, 1190, 2945. 

 Meter, Portable Air, 140, page 99. 

 Metford's Scales, 1635. 

 Metre Rules, Pocket, page 347. 

 Mica for Lockets, &c., To Order. 

 Microphone, see page 494. 

 Micrometer, Annular, 879. 



Double Image, 878. 



Eye-Piece, for Microscope, 34. 



for Microscope Stage, 954f. 



on Glass, for Telescope, 1341. 



Position, 879. 

 Micro-Photographs, Apparatus for, 2887. ' 



Spectroscope, 929. 

 Microscopes, "Achromatic, pages 256 to 275. 



Beetle or Insect, 694. 



Binocular, 915 to 924. 



Botanical, 696. 



Cloth, 697. 



Compound, 887. 



Gould's, To Order. 



Martin's, 891. 



Collectors', Pocket, 997. 



Darwin's, To Order. 



Dissecting, 886, 892. 



Educational, page 258. 



