comparison of enlargements of bore, after firing, of field guns (3.2") made of
annealed and of oil-tempered and annealed steel......................... (Appendix 39)
ANNUAL REPORTS:

419

Lieut. F. E. Hobbs; operations at the Cambria Iron Company's works, fiscal
year 1887
.(Appendix 37)

Lieut. F. E. Hobbs; operations at the Midvale Steel Works, fiscal year
1887
(Appendix 36)

Capt. D. A. Lyle; operations at the South Boston Iron Works, fiscal year
1887
..(Appendix 35)

351

363

387

129

APPARATUS for aiming field guns and mortars. (Anderson's)..
APPENDICES:

Appendix

1.-Statement of principal articles procured by fabrication dur-
ing the year ended June 30, 1887...
2.-Statement of principal articles procured by purchase during
the year ended June 30, 1887
3.-Statement of ordnance, ordnance stores, etc., issued to the
military establishment, including the national homes for
soldiers of the volunteer and Regular Army, and exclusive
of the militia during the year ended June 30, 1887......
4.-Statement of ordnance, ordnance stores, etc., distributed to
the militia from July 1, 1886, to June 30, 1887, under
section 1667, Revised Statutes....

5.-Statement of ordnance, ordnance stores, etc., distributed
to colleges from July 1, 1886, to June 30, 1887, under sec-
tion 1225, Revised Statutes..

6.-Statement of arms and ammunition issued to the Execu-
tive Departments during the year ended June 30, 1887,
under the provisions of the act of March 3, 1879.
7.-Report of action taken during the year ended June 30, 1887,
under the provisions of the act approved March 3, 1881..
8.-Showing the stations and duties of the officers of the Ord-
nance Department...

REPORTS OF THE ORDNANCE BOARD.

9.-Taylor's method of using dynamite as a propelling charge in
cannon. (1 plate)

87

10.-Buffington field gun carriage. (2 plates)

91

11.-Anderson's apparatus for aiming field guns and mortars. (1
plate)...

129

12.-Brisben's shell for throwing dynamite or other explosives

from powder guns. (1 plate)

133

13.-Union Metallic Cartridge Company's drawn copper cartridge-

cases for Hotchkiss guns.

136

...

14.-Helmer's balloon. (1 plate)

150