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Thirdly , The attractive and repulfive Property 
will be ftrongcr or weaker in any Body, in 
proportion to the Quantity of excited Effluvia 
wherewith it is impregnated. 
Fourthly , That thofe Bodies which are moft eafily 
excited by Friction, will receive the leaft Quan- 
tity of the electrical Effluvia from any other 
excited Body ; and, on the contrary, Metals, 
or thofe Bodies in which they cannot be ex- 
cited by Friction, will receive the moft. 
From thefe Obfervations 1 think it may be ftiewn, 
that this Appearance of Light is fo far from proving 
that the Effluvia come out of the Non-electric, at 
whofe Point they are vifible 5 that from thence it 
cannot be concluded the Body has any of the elec- 
trical Matter refiding in it, but is rather a Proof to 
the contrary. For I have already fhewn, that the fame 
Appearance would be produced from the fetting in 
of the Effluvia into the Non electric,* and this 
might be confirmed, if neceftary, by a Variety of 
Experiments. And as thofe Bodies, at whofe Point 
this Light appears the ftrongeft, afford us no Signs 
of their having any of the electrical Effluvia re- 
ading in them, either by their attracting or repel- 
ling other Bodies, or by their being capable of being 
excited in them by Friction, as in Glafs, &c. nor 
in fhort any fort of Evidence whatfoever, but what 
arifes from this Appearance 5 may we not expect 
Lome better Proof of their being pofiefTcd of thefe 
Effluvia , before we admit of their iffuing out of 
them ? 
Again, it appears very extraordinary, that thofe 
Bodies, in which the Effluvia cannot be excited by 
any 
