Pile battery, made of 54 glass cupped elements, set in a series on wood tray.
17 ½” x 23 ½”
Water Color, ink and graphite
Two couples, cooper and zinc, for studying frog contractions.
17 ½” x 23 ½”
Water Color, ink and graphite
Several dry batteries made up a few pieces of paper, silver, and gold on one side, call dust spread on the other, soaked in honey and bird-lime.
8 ½” x 11 “
Water Color, ink and graphite
Frog Contraction Experiments
8 ½” x 11 “
Water Color, ink and graphite
Two comparable electrometers, one thin tagged and one wood cylindered
8 ½” x 11 “
Water Color, ink and graphite
Small glass cupped battery, set in series with U shaped tubes for studying electrochemical phenomena.
8 ½” x 11 “
Water Color, ink and graphite
Inflammable air Pewter pistol loaded with millet.
8 ½” x 11 “
Water Color, ink and graphite
Column battery.
8 ½” x 11 “
Water Color, ink and graphite