=91. Door Plate Engravers.= I was told by a door plate engraver that a skilful person, who would apply himself closely, could learn the business, so that, at the end of one year, he could make a living. For door plate engraving, it is necessary to form letters well. The size of the letters for a given space must be divided by the eye. It requires great care, as one badly formed letter would spoil the whole plate. Engraving of any kind fatigues the back from stooping, and the eyes from straining. In door plate engraving the eyes suffer least fatigue. Of course less strength is necessary for plate engraving if the tools are of a good quality and in proper order.
=92. Map Engravers.= Map engraving is divided into two kinds: the lettering and plain work. The last can be learned in six months by a person of taste and talent. The most that is needed is practice. A knowledge of drawing is not necessary for this branch. There is not much map engraving done in this country, because of the expense. Most is done in New York and Philadelphia. The best map engraving done in Paris is executed by ladies. There are also some ladies employed in map engraving in London, and card engraving is there quite common for ladies.