Principiò cœlum, ac terras, campofque liquentes,
Lucentemque globum lunæ, titaniaque aftra,
Spiritus intùs alit, totamque infufa per artus
Mens agitat molem, et magno fe corpore mifcet.
VIRG. n. vi.

Earth, on whose lap a thousand nations tread,

And Ocean, brooding his prolific bed,

Night's changeful orb, blue pole, and filvery zones,
Where other worlds encircle other funs,

One mind inhabits, one diffufive Soul

Wields the large limbs, and mingles with the whole.

VOL. I.

THE THIRD EDITION, CORRECTED.

LONDON:

PRINTED FOR J. JOHNSON, IN ST. PAUL'S CHURCH-YARD.

1801.

T. Beney, Printer, Belt Court, Fleet Street.

DEDICATION.

To the candid and ingenious Members of the College of Phyficians, of the Royal Philofophical Society, of the Two Universities, and to all thofe, who ftudy the Operations of the Mind as a Science, or who practise Medicine as a Profeffion, the fubfequent Work is, with great refpect, infcribed by the Author.

DERBY, May I, 1794.

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