2 CATALOGUE OF PHILOSOPHICAL APPARATUS. 



CABINET II. 



Gas jars, with tubes to show how plants under the influence of light absorb 



carbonic acid gas and give off oxygen. 

 Two bell glasses, large enough to inclose a plant of considerable size. 



CABINETS III. and IV. VOLTAIC ELECTRICITY. 



(Upper Compartment.) 



Vessels to exhibit the electric light, and other articles of apparatus connected 

 with Voltaic electricity. 



(Lower Compartment.) 

 Six glass jars of different colours. 



Six bottles set in wood. Two glass boxes let into copper. 

 And other articles for experiments on the action of light on plants. 



CABINET V. 



(Upper Compartment.) 

 Circular Voltaic battery. 



Apparatus for decomposing water and salts by Voltaic electricity, (several 

 kinds.) 



(Lower Compartment.) 

 Electrotyping apparatus, &c. 



CABINET VI. 



(Upper Compartment.) 

 SHELF I. PNEUMATICS. 



Apparatus connected with the air-pump. 

 Small air-pump. 

 SHELF 2. Apparatus for evaporating in vacuo, several kinds. 



Syringes, &c. 

 SHELF 3. HYDROSTATICS. 



Specific gravity bottle in tin case. Two ditto in wooden case, and 



one with thermometer attached. 



Three hydrometers in tin cases, and one smaller in a leathern case. 

 Spirit measures. 



Apparatus to show by experiment the principle on which the mode 

 of ascertaining the specific gravity of solids depends. 



