APPENDIX. 957 



4OOObh. Electrophorus Cover. 

 4000bi. Reversible Net. 



VOLTAIC ELECTRICITY. 



4OOObi. Coil of Wire on Glass Tube. 



4OOObk. Zinc and Copper Plates. 



4OOObl. Astatic Galvanometer. 



4000bm. DanielPs CeU. 



4OOObn. Wheatstone's Bridge. 



40OObo. K/heocord and set of Resistance Coils. 



4000bp. Electric Bell. 



400Obq. Quadrant Electrometer. 



40OObr. Thermopile. 



40OObs. Water Decomposition Apparatus. 



MAGNETISM. 



40OObt. Two-bar Magnets and Keepers. 

 40.00bu. Magnetized Needle. 



