So place it that the phosphorus can be dropped into the glass, and in an instant combustion giving a loud report will be the result.
b.

Expose a daguerreotype plate to the vapor of bromine, it assumes a leaden-grey color, which, blackens by light very readily.

Exposing this to mercury will not produce any decided action upon the lights.
Immerse it in the solution of the muriate of soda, and the parts unacted upon by light becomes a jet black, while the parts on which the light has acted will be dissolved off, leaving a clean coating of silver.

This will be a most decided black picture on a white ground.
c.

Expose an impressioned plate, that has been sufficient time in the camera to become solarized, to the vapors of bromine, and the impression will be fully developed and exhibit no signs of solarization.