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IV. An Account of an Experiment^ touch mg the Tro* 
duElion of Light %vit\nn a Globe Clafs^ whofe inward • 
Surface is lind with SealingAVax , upon an Attrition 
of its outjide. Sy Mr. Fr. Hauksbeej f. R. S. 
T he feeming Congruity that appears to be between « 
Sealing-Wax and Glafs,in feveral Experiments 
already made in relation to Light and Eledricity, pro- 
ducible on the Attrition of them, has already been ta- . ' 
' ken notice of: And for a farther Confirmation of their 
agreablenefs, take the following Experiment. 
I took a Globe Glafs about fix Inches Diameter, into 
which when I had put a convenient quantity of broken 
Sealing-Wax, I held it over a moderate Fire, and con- 
tinu’d fo to do, till the Wax was melted-, then turning 
it about from part to part, it foon had got a pretty thick 
Lining of it, (efpecially fome parts, for I could not make 
it all alike) on more than half its infide ; Thus placing 
! it in a convenient Pofiure, I left it till it was perfedfly 
- cold. When (being Evening) after having fixt the Brafs- - 
\ work to it, I caufed it to be exhaufted of its Air ; then 
i fixing it on the Machine, to give Motion to it as ufual, 
f I no fooner held my Hand on that part of it, under 
i which it was lin’d with the prementionM Wax, but the . 
Figure of the Parts that touch’d it, was a^ vifible on the 
I inward Surface of the Sealing-Wax, as when the Glafs 
\ alone is us’d for that purpofe : The Sealing-Wax, where . . 
it is fpread thinneft on the Glafs, one can but juli difeem 
the Light of a Candle thro’ it in the Dark but fome- 
Parts are fo cover’d with it, that it is at leafi: one eighth . 
part 
