111 =Glaisher's Rain Gauge=, the receiving surface is 8-inches diameter, of stout japanned metal, with graduated glass measure, Fig. 84 1 1 0 Ditto ditto, of stout copper 1 10 0 Receiving Pots for ditto, extra 2s. and 3s. 6d. 113 =Rain Gauge=, having a receiving surface of 12 inches diameter, and graduated glass gauge tube, divided to hundredths of an inch, in japanned metal, with brass tap 2 10 0 Ditto ditto, Fig. 85, in copper 3 10 0 Ditto ditto, with sliding rod instead of graduated tube, japanned tin 2 2 0 =Rain Gauges=, of any form or area made to order, with suitable measuring glasses. 123 =Lind's Anemometer=, Fig. 86 2 2 0 125 =Robinson's Anemometer=, Fig. 87 3 3 0 Ditto ditto, Improved arrangement L4 10s. 5 15 0 Ditto ditto, with clutch movement, Fig. 88 6 15 0 =Negretti and Zambra's Improved Air Meter=, of extreme sensitiveness, very portable 4 4 0 Large Air Meters made to order. 127 =Osler's Self-Registering Anemometer and Rain Gauge=, Fig. 89 L84 to 150 0 0 128 =Berkley's Anemometers= fitted up to order, _to suit the Observatory_. 131 =Gold Leaf Electrometer=, Fig. 90 1 1 0 133 =Peltier's Electrometer= 4 4 0 134 =Bohnenberger's Electroscope=, Fig. 91 8 8 0 135 =Thompson's Electrometer=, to order =Lightning Conductors= fitted up to order. 142 =Ozone Cage=, Fig. 92 0 18 0 Ditto ditto, copper 1 5 0 146 =Leslie's Differential Thermometer=, Fig. 93 L1 10s. 2 2 0 148 =Thermometer Stand (Glaisher's)= 3 3 0 149 =Thermometer Screen= for Sea use 3 3 0 150 =Anemoscope=, or Portable Vane, Fig. 94 2 5 0 151 =Evaporating Dish=, Fig. 95 1 2 6 157 =Sea Water Hydrometers=, Board of Trade Marine, Figs. 96 and 97 0 5 6 158 =Newman's Self-Registering Tide Gauge=, Fig. 158, fitted to the Building to order From 50 0 0 _Further Information as to Price, &c., will be found in_ NEGRETTI & ZAMBRA'S ENCYCLOPAEDIC CATALOGUE OF MATHEMATICAL, PHILOSOPHICAL, OPTICAL, PHOTOGRAPHIC, AND STANDARD METEOROLOGICAL INSTRUMENTS, _Containing very numerous Comparative Tables of Reference, and Illustrated by upwards of_