From Professor Fontaine.

2. _Chalcopyrite_, from near Leesburg, said to be a promising vein.
From Professor Fontaine.

The following were contributed by the "Eagle Mining Company," of
Leesburg; F. A. Wise, general manager:

1. _Carbonate of Copper_, from vein 3' wide, developed to 25' deep.
Assays by Oxford Copper Company of New York give 51 per cent of copper
and 27 ounces of silver per ton.

2. _Sulphuret of Copper_, from vein 10" wide, developed to 50' deep.
Assays by Oxford Copper Company of New York give 12-1/2 per cent of
copper.

3. _Iron Ore_, from vein 4' wide and 50' deep. Yields 55 per cent
metallic iron by assay of W. P. Lawver, of U. S. Mint.

4. _Sulphuret of Copper_, from vein developed 50'. Yields 11 per cent
of copper and 1 ounce of silver per ton by assay of W. P. Lawver, U.
S. Mint.

5. _Carbonate of Copper_, red oxide and glance, from vein 3' wide,
developed to 25' deep. Yields 50 per cent metallic copper and 27
ounces silver per ton by assays.

6. _Iron Ore_, from vein 2' to 4' wide, developed 50'. Yield 55 per
cent metallic iron.