Smithsonian Report, 1923. — Miser and Ross 



Plate 2 



I. Diamonds From the Arkansas Mine, Pike County, Arkansas. 

 Natural Size 



The diamonds shown in the picture are owned by Col. Washington A. Roebling, Trenton, New 

 Jersey. They are crystals, with the following weights: No. 1, 11.21 carats; No. 2, 6.83 carats; 

 No 3, 3.30 carats; No. 4. 2.77 carats; No. 5, 17.86 carats; No. 6, 4.40 carats; No. 7. 1.19 carats; 

 No. 8, 0.91 carat; No. 9, 2.50 carats; and No, 10, 1.40 carats. Other information concerning the 

 crystals is given on pages — and — . 



2. Altered Volcanic Breccia ("Blue Ground") in Cut of Ozark Mine, 

 Near Murfreesboro, Pike County, Arkansas 



The bedding dips about 30° W. 



