=85. Preparers of Scientific Plates.= Mrs. B. has supported herself for some time by making drawings of fossils for works on geology. She is now doing one for a work on Niagara. It requires a great deal of care. It is very trying to the eyes as the engraver imitates every line made by the pencil, and a magnifying glass is of course much used for presenting enlarged views of the smallest fossils. I think she is paid by the piece or set, for the work. Of course this pursuit must be limited.
=86. Seal Engravers.= Seal engraving is cutting in a precious stone, letters or a device. The cutting is done by means of a lathe and sharp cutting tools. Diamond dust and oil are used. The lathe is moved by treadles. The finer the work, the smaller the tools. Taste, good eyesight, and a knowledge of form are necessary. No pattern is used. The hand and eye must serve as guides. It would be a very pretty occupation for women, but would require time, patience, and practice. Seal engravers in New York earn from $10 to $12 per week, but the occupation there is filled. Mrs. Ellet, in her "Women Artists," mentions a Prussian and a German lady as being noted for their skill in cutting precious stones. A seal engraver told me he does not pay apprentices the first year, but the second year $2, and from that up, according to the abilities of the worker. It requires from four to seven years to learn all the branches thoroughly. Another engraver told me the business is not worth learning now that gum mucilage has done away with sealing wax, and consequently the use of seals. The designs for seals are usually taken from a heraldry book; always when for a coat of arms. Such seals are in greater demand in Europe. Seal engravers in this country do not have constant employment. They cut fancy seals when not otherwise occupied. The work can be done at night by a good light.