PHILOSOPHICAL
Tranſactions:
GIVING SOME
ACCOMPT
OF THE
Preſent Undertakings, Studies, and Labours
INGENIOUS
IN MANY
Conſiderable Parts
WORLD.
VOL. VII.
For the Year MDCLXXII.
LONDON,
Printed by T. R. for John Martyn at the Bell in St. Pauls Churchyard, Printer to the ROYAL SOCIETY.