PHYSICAL APPARATUS. 1007 



HEAT. 



4OOOm. Differential Thermometer. 

 4OOOn. Alcohol Thermometer. 

 40OOo. Mercury Thermometer. 

 4OOOp. Bulb for determining Expansions. 



4OOOq. Apparatus for measuring Absolute Expansion 

 of a Liquid. 



4OOOr. Flask with Delivery Tube. 



J 

 4OOOs. Conductivity Cones. 



4000t. Hygrometer. 



lOOOu. Ventilation Apparatus. 



LIGHT. 



4000v. Fin Hole Camera. 



4000 w. Instrument for measuring Vertical Heights. 

 400Ox. Circle Dividing Board. 

 4OOOy. Multiple Image Apparatus. 

 4OOOz. Concave Mirror. 

 4OOOaa. Convex Mirror. 

 4OOOab. Three Glass Bulbs and Beakers. 

 4000ac. Glass Cell. 

 4OOOad. Bisulphide of Carbon Frism. 



40OOae. Spectroscope. 



~ f 

 4OOOaf. Folanscope. 



FRICTIONAL ELECTRICITY. 

 4OOOag. Glass Tube. 

 40OOah. Amalgamed Silk Rubber. 

 4OOOai. Balanced Glass Tube. 

 4000aj. Pointed Support for Glass Tube. 



