McCAULEY, Charles Adam Hoke, soldier, born in Middletown, Maryland, 13 July, 1847. He was graduated at the United States military academy in 1870 and entered the 3d artillery as 2d lieutenant. After serving variously until 1878, he was transferred to the 3d cavalry, and on 5 May, 1879, was promoted 1st lieutenant. Meanwhile he had devoted his attention to natural science, and in 1876 accompanied the Red river exploring expedition into the Indian territory and Texas as ornithologist. Subsequently he served in connection with Indian affairs until 5 February, 1881, when he was made assistant quartermaster with the rank of captain. Since that time he has been stationed at various posts in the western states, becoming in October disbursing quartermaster at Chicago, Illinois Captain McCauley invented in 1871 the military system of signalling by means of mirrors. He is a corresponding or active member of various scientific societies. His publications, issued by the National government, include "Ornithology of the Red River Region of Texas" (Washington, 1877); " The San Juan Reconnoissance in Colorado and New Mexico" (1877); " Reports on the White River Indian Agency, Colorado, and the Uinta Indian Agency" (1879); and "Pagasa Springs, Colorado; its Geology and Botany" (1879).