Microscopic view of a flea mb-height 5425 The device used gravity by

The device used gravity by suspending a patient (most likely a child) from the balance arms

surrounded by the wreckage of household furniture

a matronly Mrs Britannia looks at a girlish Columbia who sits holding a map representing the torn and divided States of America

targeting populated areas

The Convention of Tientsin

Microscopic view of a flea mb-height 5425 The device used gravity byIllustration showing a microscopic view of a flea. Schem: XXXIV from Micrographia: or some physiological descriptions of minute bodies made by magnifying glasses with observations and inquiries thereupon, by Robert Hooke, 1665. Original: copperplate engraving. 1665