MRS. B.
A simple body; at least one that is supposed to be so, as it has never been decomposed. It is always found united with the negative electricity. It will be one of the first of the elementary bodies whose properties I shall explain to you, and, as you will soon perceive, it is one of the most important in nature; but it would be irrelevant to enter upon this subject at present. We must now confine our attention to the enumeration and classification of the simple bodies in general. They may be arranged as follows:
CLASS I.
Comprehending the imponderable agents, viz.
HEAT or CALORIC,
LIGHT,
ELECTRICITY.
CLASS II.
Comprehending agents capable of uniting with inflammable bodies, and in most instances of effecting their combustion.
OXYGEN,