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.)
14. Magical Circle, (Plate VIII.)
15. Waterspout, (Plate IX.)
17. Aurora Borealis, &c., (Plate XI.)
18. Improvements in Navigation, (Plate XII.)
19. Chart of the Atlantic Ocean, exhibiting the Course of the Gulf Stream, &c., (Plate XIII.)
20. Illustrating the Causes and Cure of Smoky Chimneys, (Plate
21. Stove for burning Pit-coal, (Plate XV.)
22. Portrait of Mrs. Franklin,