CHAPTER LIV.
SIGNAL SERVICE 420
Origin of Signal Service—Scientific and useful character—Mode of conducting it—School of Instruction—Grades of officers—Their duties—Number of Stations—Smithsonian Institution—Its Origin, Objects and Value.
SIGNAL SERVICE 420
Origin of Signal Service—Scientific and useful character—Mode of conducting it—School of Instruction—Grades of officers—Their duties—Number of Stations—Smithsonian Institution—Its Origin, Objects and Value.