JOHANN LUDWIG HANNEMANN, M.D.

PROFESSOR OF NATURAL PHILOSOPHY AT THE CHRISTIAN-ALBRECHT UNIVERSITY FOR 43 YEARS,

HONORARY PROFESSOR, AND SENIOR MEMBER OF THE ACADEMY,

NESTOR II OF THE LEOPOLDINE-CAROLINE SOCIETY.

FRIEDRICHSTADT LEISURE,

i. e.

THE LADDER OF WISDOM IS NOT TO FLY HIGH, BUT TO DWELL UPON THE GROUND; IT IS FOLLY TO SEARCH THE SUBLIME AND NEST BENEATH THE SUN.

WHAT THE FOOLISH SCORN, THE WISE GATHER. CHEMICAL WINNOWING

page 249 & 251.

with a Dedication

to the

Curious Academy. The Academia Curiosorum, also known as the Leopoldina, was the oldest continuously existing society of naturalists in the world.

HAMBURG

Published by CHRISTIAN LIEBEZEIT, 1717.