Of course, if we wish to observe the splash of a solid sphere, there is no need to smoke the surface of the watch-glass.
A bit of the culture is removed and placed in a watch-glass of water.
Now observe in the eye, that forward part, called the cornea, is as it were the watch-glass.
The edges are now ground off, and the watch-glass is complete.
But for what purpose could a person wear 'watch-glass' spectacles?
A little of the supernatant ether is now removed to a small glass capsule or watch-glass, and allowed to evaporate spontaneously.
I also left others in a watch-glass, which was placed under a bell-jar enclosing several ferns.
In form, it is circular, convexo-concave, and resembles a watch-glass.
Watch, pocket for; watch-glass as a burning lens; cover as a reflector.
There's no more glass about you than there is about me—and that is my watch-glass.