—The _Scientific American_ deduces the following results, from the Surgeon-General’s report, as to comparative health and mortality in the army. For the year ending June 30, 1877, the army consisted of 23,284 white men and 2,075 colored men. Total cases of sickness of all kinds, 40,171; deaths, 260. Among colored troops, total sicknesses, 4,348; deaths, 32. The colored men’s sicknesses were 20 per cent. more than those of the whites; while in deaths, we find the proportion reversed, for only 7 per thousand of colored men died of disease, as against 8 per thousand of white men. In cases caused by wounds, accidents, or injuries, 8 per thousand negroes died, against 3 per thousand of white men. It thus appears that the negroes become diseased more easily than white men, and also recover more readily; but when actual bodily injury occurs, the death-rate is more than twice that of white men. —The United States Census of 1860 showed the increase among the blacks in ten years to have been 25 per cent.; from 1860 to 1870 a little over 10 per cent., though these were years of war and want. —In view of these statements, General Armstrong, of Hampton, Va., writes in the _Southern Workman_: “Many close observers believe that the decrease is general, but equally good authorities assert the contrary. No conclusion is satisfactory; but we incline to the belief that the colored race will at least hold its own, because in the corresponding class of whites in all cities there is great mortality. It would be interesting to know the death-rate among the poor whites of Washington, Richmond and Charleston, whose dying out has never been hinted at. The negro is prolific. The phenomena of a dying race, such as one sees among the decaying Polynesian tribes are not seen among them. Children are abundant and healthy in city and country. The pickaninnies do not seem destined to die young. They are a numerous, frisky, healthy class, of unfailing humor and appetite, as unlike as anything can be the sore-spotted, scarce Hawaiian child, whose race is doomed.” * * * * * AFRICAN EMIGRATION. —It appears that the “information from Liberia,” said to have been received by “the Department of State,” already widely circulated, was not in any sense an official publication, nor is the name or standing of the author given. —Rev. Dr. George W. Samson, for forty years a resident of Washington, for twelve years President of Columbian College, and for sixteen years a member of the Executive Committee of the American Colonization Society, has written a weighty reply to these statements in the Boston _Traveller_. In it he shows the economical planting, the rapid progress, the fertility of the soil, the intelligence and educational facilities of the colony, by the testimony of U. S. naval officers and other distinguished witnesses.