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204 HISTOEY OF DENTAL SUEGEEY

sequent melts by adding more or less of either kind of glass necessary. The
best of the prepared fillings is selected and cemented into the cavity.
In the '-Cosmos," (Vol. XXXII, p. 412, 1890) Dr. S. Davis of Denver,
Col., describes four lal>ial inlays cut from porcelain teeth, set with oxyphos-
phate cement, and the borders then excavated and filled with gold (essentially
the Maynard operation). He says lie had experience in porcelain inlay work
dating from 1868, and had recently seen, in good condition, a large inlay in
a central incisor made in this way twenty years previously.
Dr. J. A. Swasey, at a meeting of the American Association, ("Cosmos,"'
Vol. XXXII, p. 884, 1890) after referring to inlays made of rubber, de-
scribed his method of making a gold inlay. Formerly he took the impression
of the cavitv in modeling compound and made a model, but lately had taken
the impression with ribbon of gold. No. 12t), which was then invested in a mix-
ture of coal ashes and plaster and filled by melting gold into it.
Dr. W. H. Metcalf, of New Haven, Conn., at a meeting of the Connecticut
Valley Dental Society, ("Cosmos," Vol. XXXIII, pp. 848-51, 1891) described
Dr. Herbst's method of nuiking glass fillings, and said it was first demon-
strated in America by Dr. Herbst, July G, 1886, at the S. S. White Depot in
New York City. Dr. Metcalf said he thought the entire credit of the intro-
duction of vitreous fillings in teeth should be given to Dr. Ilerlist. He de-
scribed the evolution of the method of Dr. Herbst, who at first made them in
plaster models, made from modeling compound impressions, then he used gold
foil in the cavity under the modeling compound leaving the gold in the plaster
model. Afterward he made a nuitrix of heavy gold foil directly in the cavity,
dispensing with the impression and model.
A7icie7it Inlays.—Dr. Henry Gerhart, of Lewisburgli, Pa, in a letter to
the "Cosmos," (Vol. XXX Y, p. 461, 1893) says that Professor John G. Owens,
of Harvard, told him that while excavating for the Peabody Museum at Copan,
Central America, "he uncovered the skeleton of a man of more than ordi-
nary stature. While carefully removing the bones for preservation, he observed
the teeth dropping from the upper maxilla and carefully gathered them.
On examining a central, he was surjirised to find on the labial aspect an in-
lay of green stone, nearly square, with round corners. Examining its mate,
he found that it had also had an inlay, which had dropped out, exposing
a red cement which had held it in ]ilace: a careful search in the soil brought to
light the missing stone."
"Cosmos" (Vol. XXXVII, p. 1037, 1895) contains a paper by W. E.
Christensen, D. D. S., of Munich, Germany, read by Dr. Huey before the