The way in which the works are
reproduced is as follows: When the clay model is complete, a single
plaster cast is taken for a pattern, and is finished with the most
scrupulous care by Mr. Rogers himself. This cast is used as a pattern
for making whatever number of molds may be needed to supply the demand
for any particular group or statue. The molds are made of glue softened
with water, so as to be about as limber as India-rubber. This is poured
over the pattern while in a warm and liquid condition; it is, therefore,
necessary to surround the pattern with a stiff case to hold the glue in
place. This case is made of plaster, and is built up by hand around the
pattern. When the glue has become sufficiently hard, it is cut by a thin
sharp knife and pulled off the pattern. The parts are put together and
bound by cord, making a perfect glue mold. The plaster of Paris is then
poured into the mold inverted. A number of crooked pieces of wire are
also placed in the mold to strengthen the figure. In about twenty
minutes the plaster sets so as to allow the case to be opened, and the
glue mold to be pulled off. To his proficiency in the mechanical part of
his art Mr.
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