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                                    ABRASIVE MATERIALS.                                 429

        Grindstones imported and entered for consumption in  the United States, 1868 to 1885, in-
                                               clusive.

                                                    Finished.     Unfinisliedor rough.
                                                                                      Total
              Fiscal years ending June 30
                                                                                      value.
                                                Quantity.  Value.  Quantity.  "Value.
                                               Long tons.         Long tons.
       1868.                                              $25, 640           $35, 215  $60, 855
       1869.                                               15, 878            99, 715  115,593
       1870.                                               29, 101            96, 444  125, 605
        1871.                                        385   43, 781  3, 957. 15  60, 935  104, 716
       1872.                                       1,202   13, 453  10, 774. 80  100, 494  113, 947
       1873.                                        1,437  17, 033  8, 376. 84  94, 900  111, 933
       1874.                                       1, 443  18,485   7. 721. 44  87, 525  106, 010
       1875.                                       1,373   17, 642  7, 6.56. 17  90, 172  107. 814
       1876.                                       1, 681  20, 262  6, 079. 34  69, 927  90, 189
       1877.                                       1,245   18, 546  4, 979. 75  58, 575  77, 121
       1£78.                                       1,463   21, 688  3, 669. 41  46,441  68, 129
       1879.                                       1,603   24, 904  4, 584. 16  52, 343  77, 247
        1880.                                      1,573   24, 375  4, 578. 59  51,899  76, 274
        1881.                                      2,064   30, 288  5, 044. 71  56, 840  87, 128
        1882.                                      1,705   30, 286  5, 945. 61  66, 939  97, 225
        1883.                                      1,755   28, 055  6, 945. 63  77, 797  105, 852
        1884.                                                                          86,286
        1885.                                                                          50, 579



                                         CORUNDUM.


          Emery and corundum are found in many localities described in for-
       mer reports, but all the emery used is imported, principally from Tur-
       key, and the production of corundum is limited to the deposits at
       Corundum      hill, North Carolina, and at Laurel creek, Georgia, as de-
       scribed in the last report.      The production has not been reported.           The
       mines are both operated by the Hampden Emery Company, of Chester,
       Massachusetts.
        , Foreign sources.—An interesting description of the corundum deposits
       in Asia Minor is contained in the report of Mr. W. E. Stevens, consul
       at Smyrna, abstracted below        :
          ''  Emery stone is found in nearly all parts of Asia Miuor, and not
       unfrequently in the remote and almost inaccessible regions of the inte-
       rior, where the natural obstacles are too great to ofter any inducement
       to the miner.     The principal mines are confined to the districts of Thyra
       and Aidin, situated to the southward from Smyrna, and not far dis-
       tant from the line of the Ottoman railway.            These are known as       : The
       Tchavus, within one hour's ride from the town of Thyra, owned by Mr.
       Frederick Charnaud       ; the Hassan Tchaouslar, owned by Mr. Jackson
       the Aladjali Tchiflik and Kourchak, owned by Mrs. Abbot ; the Halka
       or Saladin, owned by Mr. Frederick Charnaud ; the Akdere, owned by
       Mr. Glyka, and the Gurnush Dogh, owned by Mrs. Abbot.                       There is
       another mine near Milassa, the stone from which is brought for shipment
       to a place on the coast called Kuluk, near the gulf of Mendalia.                It is
       either shipped direct from that place to foreign markets or brought to
       Smyrna in small sailing craft for reshipment.
          " When well picked and free from unsound ore and waste, the emery
       from the Charnaud^ Jackson, and Abbot mines is of good and nearly
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