Lessons by Correspondence.
If the distance from London is too great for a pupil to come to town, the “roughed” Cameo can be sent to Signor Giovanni by post. He then makes a mould, and produces a cast; this he corrects and returns, so that the pupil can alter and improve the Cameo without the intervention of a foreign hand.
In order to produce a Mould from which to take casts, first lightly oil the surface of the Cameo, place around a cardboard funnel, which can be held in place by an indiarubber band. The plaster of Paris used must be “extra fine;” that most suitable is called “Scagliola,” and may be purchased at any oil-shop at 6d. a bag containing a few lbs. Mix a small quantity with water, and pour upon the face of the Cameo. When dry, paint the Mould with French polish until a gloss appears upon the surface. When the Mould is perfectly dry, apply oil to the surface, then pour in plaster of Paris. As many impressions may be taken in this way as are desired without injury to the Mould.