Cheap Egg-Testing Lamp.

Kaipara and Waitemata Echo, 6 November 1914, Page 2

Cheap Egg-Testing Lamp.

Here is an egg-testing lamp which is just as cheap as it is effective. All you need to make it are a small wooden box, a piece of black cardboard slightly bigger than the box and a candle.

Cut a square hole in one side of the box to act as a chimney. In the piece of black cardboard cut an egg-shaped hole. Remove the lid of the box, and- stand the black cardboard in front. The pump is then complete. The light of the candle must be immediately behind the hole in the cardboard, and of course the eggs must be tested in a

dark room