VI. Experiments of the luminous qualities of amber, diamonds, and gum lac, by Dr. Wall, in a letter to Dr. Sloane, R. S. Secr

Abstract

Sir, Having lately observ´d several natural solid noctiluca´s, not hitherto by any, as I know, taken notice of, (I think I may be well assur´d some of the phenomena never were,) at your request I give you the larger account of´em: but before I speak of my own observations, give me leave to inform you a little concerning the artificial phosphorus, which, you know, is a subject I´m pretty well acquainted with, having made a great number of experiments about it, whereby I was naturally led to the following remarks.