REPORT OF NATIONAL MUSEUM, 1914. 135 
the Deutsch-Amerikanischer Techniker Verein of Washington in the 
Museum building on January 18, 1914, a report of which was pub- 
lished in the Technologist for March, 1914. The Museum is greatly 
indebted to Mr. Charles E. Lotte, treasurer of the National Silk 
Dyeing Co. and a member of the board of managers of the Silk Asso- 
ciation of America, for his cooperation in securing the interest of 
manufacturers and importers in the textile exhibits, which has re- 
sulted in materially enriching the collections of silk fabrics. 
Mineral technology.—Although not actively organized until June, 
1913, a considerable amount of material relating to the objects of 
this division had previously been assembled, mainly through the 
generosity of exhibitors at the St. Louis exposition of 1904. The 
total number of accessions reported for the past year, including some 
of the St. Louis donations which had not previously been recorded, 
was 26. The more important of these were as follows: 
An industrial exhibit illustrating processes in the art of glass 
making, designed by Mr. George A. Macbeth, president of the Mac- 
beth-Evans Glass Co., of Pittsburgh, Pa., and received as a gift from 
the company. This accession includes models of the two standard 
types of furnace in current use, namely, the tank-furnace and the 
pot-furnace, of about one-sixteenth actual size, reproducing the 
originals in all particulars and so constructed as to reveal working 
details throughout. They furnish, therefore, an exceedingly valu- 
able demonstration for the technical as well as untechnical visitor. 
Mr. Macbeth has given freely of his personal attention to the plan- 
ning of these and other features of the series, and only minor gaps 
remain to be filled before its permanent installation. It will consti- 
tute a full display of the processes involved in glass manufacture, 
unique in its technical accuracy and in its completeness of repre- 
sentation as a glass exhibit the world over. 
A complete working model of a bituminous colliery, presented 
by the Consolidation Coal Co., of Fairmont, W. Va. This is an 
exact replica of the company’s mine at Fairmont, on a scale of one- 
twelfth natural size, and occupies a floor space of 30 by 40 feet in 
the southwest court of the older Museum building. The model 
shows, in addition to a portion of the mine workings, the haulage 
system, tipple, washery, coke plant and other surface improvements, 
and also the adjoining portion of the miners’ village. Not only 
does it exemplify in actual working details the various operations 
connected with the mine itself, but from its setting the visitor’s 
imagination may visualize accurately the social conditions typical 
of a coal-mining community. 
A reproduction, one forty-eighth natural size, of the First Pool 
No. 2 mine of the Pittsburgh Coal Co., at Willock near Pittsburgh, 
Pa., contributed by the company. While this model copies faithfully 
