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 sj^stematic series covering the coal and coal- 

 products industries was further enhanced b}^ 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' sj^stem. 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 j^ear, with 

 descriptive labels explaining the nature of conditions and opera- 

 tions represented. All accessions of the j^ear from outside sources 

 were also placed on exhibition in either permanent or temporary 

 form. 



DISTRIBUTION AND EXCHANGE OE 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 sending? of which were 

 as follows: Mollusks, 22 sets of 171 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 roclcs, 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 stud}'^ 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- 



