The principles, elements, or Primary particles of bodies, inquired into And found to be, neither those of the chymists or of the natural philosophers; but earth, water, air, fire, and frost. Taken from the observance of nature, and numerous experiments. By John Gibson, M.D. - Gibson, John, (Printed for the author; and sold by Messieurs J. Nourse, D. Wilson and G. Nicol, and T. Cadell, in the Strand; J. Robson, New Bond-street; E. and C. Dilly, in the Poultry; L. Davies, Holborn; and T. Evans, Pater-noster Row,, 1772)