Whether for this recipe or another, the bottoms should be immediately plunged into acidulated water _ a bowlful with a half a lemon squeezed in, or 10 parts water to one part vinegar _ to preserve their color until cooking.
22.
Elisha Gray reasoned that a metal rod vibrating up and down in acidulated water would alternately lengthen and shorten the small distance between the bottom end of the rod and a metal plate at the bottom of the glass container holding the water.
23.
Messages could be sent from the United Kingdom to the United States through one Atlantic cable and back again through another, and there received on the mirror galvanometer, the electric current used being that from a toy battery made out of a lady's silver thimble, a grain of zinc, and a drop of acidulated water.
