Durfee's submarine gun. Letter from the Secretary of the Navy, in answer to resolution of the House of 9th instant in relation to the propriety of an appropriation for testing Durfee's submarine gun by United States. Navy Dept.

Durfee's submarine gun. Letter from the Secretary of the Navy, in answer to resolution of the House of 9th instant in relation to the propriety of an appropriation for testing Durfee's submarine gun