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APPENDIX I.
OBSERVATIONS
ON
The new-diſcovered Swedish Acid;
AND ON
The Stone from which it is obtained.
SECT. I.
Of the Mineral Acid in general.
THERE exiſts in the Mineral World a native Acid; and probably only one; tho' it exhibits itſelf under different Forms.
Of the Exiſtence of this we are certain; altho' we never have ſeen it pure; nor can: It never becoming an Object of our Senſes, but
in
