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9. Electrical Apparatus, (Plate III.)

7. Electrical Apparatus, (Plate I.)

8. Electrical Air-Thermometer, (Plate II.)

10. Electrical Apparatus, (Plate IV.)

11. Pennsylvania Fireplace, (Plate V.)

12. Profile of the Pennsylvania Chimney and Fireplace.—Stafford

shire Fireplace. (Plate VI.)

13. Magical Squares, (Plate VII.)

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14. Magical Circle, (Plate VIII.)

15. Waterspout, (Plate IX.)

16. Armonica, (Plate X.)

17. Aurora Borealis, &c., (Plate XI.)

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XIV.)

18. Improvements in Navigation, (Plate XII.)

19. Chart of the Atlantic Ocean, exhibiting the Course of the Gulf Stream, &c., (Plate XIII.)

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20. Illustrating the Causes and Cure of Smoky Chimneys, (Plate

21. Stove for burning Pit-coal, (Plate XV.)

22. Portrait of Mrs. Franklin,

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Frontispiece, VII.

VOL. I.

D

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