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Rod, and then the Finger or Cheek being put near 
either End of the Rod, the Effect was the fame as 
when an Animal had been fufpended on the Lines, 
with refpeffc to the pricking Pain we felt. 
f . At Night we made the luminous Part of the 
Experiment, fufpending the Iron Rod on the filk Lines ; 
then applying one End of the Tube to one End of 
the Rod, not only that End had a Light upon it, but 
there proceeded a Light at the fame Time from the 
other, extending in Form of a Cone, whofe Vertex 
was at the End of the Rod, and we could plainly fee 
that it confined of Threads, or Rays of Light, diverging 
from the Point of the Rod, and the exterior Rays be- 
ing ineurvated. This Light is attended with a fmall 
Tiffing Noife; every Stroke we give the Tube, caufes 
the Light to appear: the Hilling feems to begin at 
that End of the Rod next the Tube, and as it comes, 
increafes in its Loudnefs, but it is fo fmall as not to 
be heard without good Attention, and by thofe only 
that Hand at that End of the Rod from whence the 
faid Light proceeds. 
Mr. Godfrey being delirous to fee thefe Experi- 
ments, I repeated them, by laying a Rod of Iron upon 
a Cake of Shell-Lake, which was laid uponaGlafs 
Velfel ; but the Effeds being much the fame with 
what has been above-mentioned, I lhall not need to 
mention any other Particulars. 
i. I Hull now proceed to give fome Account of the 
Experiments I have made fince my Return to London , 
which was in September laft. I caufed three Iron 
Rods to be made, one of four Feet long, two, each 
three Feet in Lengthy one of thefe was made taper- 
ing toward the Ends, and pointed as that of four Feet 
i was 
