394 



NEGRETTI AND ZAMBRA, HOLBORN VIADUCT, E.G., 



Each. 

 a. d. 



056 076 



2123 Volumeter, 1,000 grains capacity, divided into 100 equal 



parts (fig. 2101) 



2124 Woulffe's Bottles, well made plain necks, so as to cork 



easily ; with two necks shape as fig. 2124 : 



Contents i-lb. 1-lb. 2-lb. 4-lb. 6-lb. 8-lb. 10-lb. 



Price . Is. Is. 6d. 2s. 6d. 3s. 8d. 5s. 7s. 8s. 6d. 



2125 Woulffe's Bottles, with three plain necks, shape as fig. 2125 : 



Contents -lb. 1-lb. 2-lb. 4-lb. 6-lb. 8-lb. 10-lb. 



Price . 2s. 2s. 6d. 3s. 4d. 4s. 8d. 6s. 9s. 6d. 11s. 6d. 



2126 Woulffe's Bottles, with one neck, accurately Stoppered, 



as figs. 2126 and 2126 : 



l-pint. 2-pints. 3-pints. 



2-neck 3s. 2d. 3s. 8d. 4s. 6d. 



3-neck 3s. 8d. 4s. 6d. 5s. 6d. 



2127 WoulfFe's Bottles, a set of three l-pint, in a Mahogany 



tray, fitted with safety funnels, tubes and connectors 

 (fig. 2127) 



18 6 



FIG, 2137. 



FIG. 2137*. 



FIG. 2145. 



FIG. 2138. 



APPARATUS FOB ORGANIC ANALYSIS, &c. 



s. d. s. d. 



2128 Apparatus for illustrating the Composition of Water 



Synthetically, by burning Hydrogen gas in 



atmospheric air ........ 050 



2129 Berzelius' Sulphuretted Hydrogen Apparatus 



(figs. 2129, 2129*) 086 



2130 Ditto, ditto, with extra Washing Bottle, ... 1 12 6 



2131 Cavendish's Apparatus for detonating a mixture of 



Oxygen and Hydrogen Gas, illustrating the 



Composition of Water 2 12 6 



2132 Donavon's Apparatus for Filtering Caustic Potash 



(fig. 2132) 1 10 



2133 Dobereiner's Extracting Apparatus (fig. 2040) . 1 15 



2134 Fritzch's Apparatus, for Analysis of Carbonates (fig. 2234) 020 



2135 Glass Apparatus for showing Diminished Bulk by 



mixing Sulphuric Acid and Water (fig. 2135) . 050 



2136 Glass Apparatus, for Exhibiting the Philosophical 



Candle and producing musical sounds by Hydrogen 



Gas " from 10 6 



2137 Leibig's Potash Apparatus, made very light from 



German glass, free from lead (figs. 2137 and 2137*) .026 036 



