Vol. 46. 



September 1815. 



No. 209. 



-"^•'^./:5rS^ — ,r^^- 



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^^^^^ For SEP TEMB E R 1815. !r^^^ 



^.:. ;;? containing, the following engraving by poRTEk s %:' 



A i^-v-i^ A Plate to illustrate some Elecuical Experrirents byM. Ds Ij-- . 



!^i^ ' Nelis; with an Extcnsiou of them by Mr. Singez and i''*\ 



^m Mr. CxossE. ~ ^ _ .' t;^-> 



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