( ?8 ) 
hung on a Nail, as in the other Experiments, fo that 
the Hoop hung now in an horizontal Pofition : Then 
the Leaf-Brafs being laid under the Edge of the Hoop, 
at between two and three Inches below it, the Tube 
being rubbed, and held between the Cords without 
touching them, the Leaf-Brafs was attraded and repel- 
led for feveral times together ; but when held near the 
outfide of the Hoop, oppofite to that Part where the 
Leaf-Brafs lay, the Attraction was much ftronger. 
About the latter End of Autumn, and the Beginning 
of the Winter in 17x9, I refumed my Enquiry after 
other Ele<Etrick Bodies, to fee what Addition I could 
make to the Catalogue of tliofe mentioned above, in 
Pages ii, 22, and found many more that have the fame 
Property, and may be excited to attract by the fame 
Method. As for Inftance, the dry withered Leaves of 
Reeds and Flags, Grafs and Corn, both Leaves and 
Straw ; the Leaves of Trees, as thofe of the Laurel, 
the Oak, the Walnut, the Chefnut, Hazle-nut, Apple 
and Pear-tree Leaves ; fo that we may conclude, that 
the Leaves of all Vegetables have this Attractive 
Vertue. 
I ft all now give an Ac count of the Experiments made 
at my Chamber in the Tear 1730.. 
March the 23d, I diffolved Soap in the Thames - 
Water, then I fufpended a Tobacco-Pipe by a Hair- 
Line, fo as that it hung nearly horizontal, with the 
Mouth of the Bowl downwards ; then having dipped 
it in the Soap-Liquor, and blown a Bubble, the 
Leaf-Brafs laid on a Stand under it, the Tube being 
rubbed, the Brafs was attracted by the Bubble, when 
