R.WT.26

EXPERIMENTS

AND

OBSERVATIONS

ON DIFFERENT KINDS OF

A I R.

By JOSEPH PRIESTLEY, LL. D. F. R. S.

Fert animus Caufas tantarum expromere rerum ;

Immenfumque aperitur opus.

才

LUCAN

LONDON:

Printed for J. JOHNSON, No. 72, in St. Paul's

TO THE RIGHT HONOURABLE

THE EARL OF SHELBURNE,

THIS TREATISE IS,

WITH THE GREATEST GRATITUDE,

AND RESPECT,

INSCRIBED,

BY HIS LORDSHIP's

MOST OBLIGED,

AND OBEDIENT

HUMBLE SERVANT,

J. PRIESTLEY,