REPORT OF NATIONAL MUSEUM, 1914, 137 
model representing the Pittsburgh Coal Co.’s operations at Willock, 
near Pittsburgh; a model of the Takashima coal field, Japan; a 
model of the Western Coal & Mining Co.’s colliery at. Jenny Lind, 
Ark.; a model of the Fayal iron mine at Eveleth, Minn.; and a blast 
furnace model. 
The value of the systematic series covering the coal and coal- 
products industries was further enhanced by the addition of four 
models designed and constructed within the division, representing, 
respectively, a Bennington coke pile, a non-by-product rectangular 
coke oven, a gas bench, and a complete by-products plant according 
to Koppers’ system. A rather unique supplement to the coal series 
proper, also devised and constructed by the division, represents the 
coal resources of the world, as apportioned by kind and amount 
among the various countries and individual States of the Union. 
The foregoing were all permanently installed during the year, with 
descriptive labels explaining the nature of conditions and opera- 
tions represented. All accessions of the year from outside sources 
were also placed on exhibition in either permanent or temporary 
form. 
DISTRIBUTION AND EXCHANGE OF SPECIMENS. 
There was distributed to schools and colleges for educational pur- 
poses an aggregate of 14,564 duplicate specimens, besides about 400 
pounds of rock and mineral fragments suitable for blowpipe in- 
struction, all properly identified and labeled. The majority of the 
material was put up in regular series, the sendings of which were 
as follows: Mollusks, 22 sets of 174 specimens eacu; fossil inverte- 
brates, 33 sets of 40 to 54 specimens each; minerals and ores, 26 sets 
of 84 to 86 specimens each; rocks, minerals, and ores, 7 sets of 74 
specimens each; and rocks, 2 sets of 70 specimens each. The special 
educational distributions comprised 58 lots with an aggregate of 
6,279 specimens, of which over 90 per cent consisted of marine in- 
vertebrates, fossils, and geological specimens, though nearly all the 
subjects of the scientific divisions were represented. 
In exchange transactions a total of 15,224 specimens were used, 
of which 11,967 were botanical, over 1,500 geological and paleon- 
tological, the remainder belonging to the several divisions of zoology 
and anthropology. 
As to the specimens sent out for study only approximate figures 
can be given, as in many cases they were in unassorted lots awaiting 
determination, this being especially so with the recent marine in- 
vertebrates and the fossil invertebrates. The figures as recorded 
are 10,256 for the department of biology and 5,425 for the depart- 
ment of geology, a total of 15,681 specimens, besides 107 lots of fos- 
sils, and 746 lots of marine invertebrates. These specimens were dis- 
