Jan., 1910. Annual Report op the Director. 359 



ture of Japanese pottery received from Nippon Toki Gomei Kwaisha 

 has been installed in Hall 68. This series exhibits both material 

 and stages of manufacture. Hall 70, devoted to varieties of coal 

 and hydrocarbons, has been completely reinstalled during the 

 year. New cases have been provided throughout and the speci- 

 mens, with some additions, reinstalled in them. The cases adopted 

 are wall and floor cases of the type already in use in Hall 68, 

 with the exception that the wall cases are deeper. Seven wall 

 cases and six floor cases of these types have been placed in the 

 Hall. Five of the wall cases are devoted to the collection illustrating 

 varieties of coal from lignite to anthracite. Besides the coals of this 

 country those of England, Germany, and Australia are especially well 

 represented. The two additional wall cases are three feet deep 

 and are devoted to large specimens of asphalts, cannels, and other 

 coals, including a complete section, six feet in height, of an Australian 

 coal seam. Of the floor cases, one is occupied by diamonds and dia- 

 mond-bearing earths and rocks from most of the important diamond- 

 bearing regions of the world. Another is devoted to a very complete 

 collection of graphites from various localities and countries. The 

 others contain asphalts, gilsonite, and other hydrocarbons of economic 

 importance as obtained from various localities. A complete collec- 

 tion of rocks associated with the coals of Saarbrucken, Germany, and 

 illustrating in a general way the rocks usually associated with coal 

 occupies another floor case. The total number of specimens now 

 exhibited in the Hall is as follows: 44 American lignites, 9 American 

 cannels, 55 American bituminous coals, 29 English and miscellaneous 

 European coals, 54 German coals, 17 specimens illustrating German 

 coal washing, 12 specimens foreign bituminous coals, 17 specimens an- 

 thracite coals, 17 large specimens of French and California asphalts, 

 American anthracites, cannels, etc., 31 specimens diamondiferous 

 rocks and gravels, 50 specimens graphite, 50 specimens of peat and 

 its products, and 63 specimens of asphalts and related hydrocarbons. 

 Hall 72, devoted to ores of the precious metals and lead has also been 

 completely reinstalled during the year. New cases have been pro- 

 vided and a complete reorganization of the collections made. The 

 wall cases are of the type used in Hall 79 with some changes in the 

 felting and hinging. Ten of these wall cases have been provided. 

 On the floor of the Hall fifteen cases have been placed, five of which, 

 placed in the center of the Hall, are devoted to larger specimens. 

 These cases are similar to those used in Hall 79 except that the sides 

 have been made in a single light of glass instead of two lights, and 



