It will be noted by the close observer, that the shell of the common hen's egg has a number of minute holes, which destroy the perfect smoothness of its appearance. This peculiarity is imitated in the following simple manner: in the first place, very slightly prick with a fine needle the surface of your waxen egg, and then, having smeared it with spirits of turpentine, rub the surface all over, so as nearly to obliterate the marks of the needle point.

1907. The simple experiment which has just been described really embodies all that need be said to start the pupil in his first endeavour. The colouring of the wax is a matter which comes easily enough by experiment. Oranges, lemons, large gooseberries, small cucumbers, etc., etc., are excellent objects for practice.