Barometric, thermometric, and hygrometric states of the atmosphere for every day in the year, indicating, in columns, the amount in inches of rain, hail, and snow. 1. MORTALITY: II.-MORTUARY TABLES.1 From fevers; from measles, smallpox, and varioloid. From diseases of the lungs and air-passages. From diseases of the nervous system. From diseases of the organs of nutrition. From diseases of the urino-genital organs. 2. CAUSES assigned for death where the number exceeds 10 per cent. of the whole. 3. QUARTERLY TABLES, showing the whole number of deaths of white and of colored persons under 1 year, from 1 to 2, from 2 to 5, from 5 to 10, from 10 to 15, from 15 to 20, and for every decennial period over 20. III. PREVALENT DISEASES.2 1. EPIDEMICS AND ENDEMICS OF THE YEAR: Their origin and march; apparently contagious or not; how affected by race, age, sex, temperament, avocation, circumfusa, ingesta, and the density of population. 2. FEVERS: Intermittent and remittent; their frequency as compared with that of former years. Typhus and typhoid fevers; smallpox; benefits of vaccination; measles; scarlatina. 3. OTHER DISEASES: Observations on their etiology, pathology, and therapeutics. Number of cases, and a comparison of it with that of other 4. MISCELLANEOUS: Medical effects of indigenous plants, and of new remedies. Notices of members deceased during the year. List of officers and members. If, as is to be feared in many counties, the materials for this classification cannot be obtained, the reporter is requested to approximate as closely to it as his means of information will admit. 2 In describing cases, give the age, sex, condition, and location of patient, season of year, treatment, and termination. REPORT OF THE ALLEGHENY COUNTY MEDICAL SOCIETY. THE locality, hydrography, topography, and geology of this county, being well understood, require no mention. The tables used in the report, which are accurate, are taken from the report of W. Snively, M.D., Registrar of Vital Statistics for the city of Pittsburg. METEOROLOGY.-The mean temperature of January was 28.1°. The maximum temperature (53) occurred on the 31st, and the minimum (4°) on the 10th. Monthly range, 49°. Rain or snow fell upon seventeen days, to the amount of 2.99 inches. Prevailing wind, west. The mean reading of the barometer was 30.125 inches; the highest, 30.525 inches, on the 17th; and the lowest, 29.373 inches, on the 15th. Monthly range, 1.152 inches. The mean relative humidity was 76.2 per cent. The mean temperature of February was 36.9°. The maximum temperature (66°) occurred on the 1st, and the minimum (15°) on the 13th. Rain or snow fell upon eight days, to the amount of 1.43 inches. Prevailing wind, northwest. The mean reading of the barometer was 30.107 inches; the highest, 30.712 inches, on the 13th, and the lowest, 29.565 inches, on the 23d. Monthly range, 1.147 inches. The mean relative humidity was 66.6 per cent. The mean temperature of March was 35.7. The maximum temperature (672) occurred on the 23d, and the minimum (22) on the 18th. Monthly range, 65°. Rain or snow fell upon seventeen days, to the amount of 5.31 inches. Prevailing wind, northwest. The mean reading of the barometer was 29.972 inches; the highest, 30.477 inches, on the 11th, and the lowest, 29.143 inches, on the 8th. Monthly range, 1.344 inches. The mean relative humidity was 70 per cent. The mean temperature of the quarter was 33.6°. Highest temperature (67°) March 23; lowest temperature (2°) March 18. Range during quarter, 65°. Mean barometer, 30.068 inches; highest barometer, 30.712 inches, February 13; lowest barometer, 29.143 inches, March 8; range during quarter, 1.569 inches. Mean relative humidity, 70.9 per cent. Rain or snow fell upon 42 days, to the amount of 9.73 inches. The mean temperature of April was 51.72. The maximum temperature (802) occurred on the 24th, and the minimum (25°) on the 3d. Monthly range, 55°. Rain or snow fell upon ten days, to the amount of 2.88 inches. Prevailing wind, northwest. The mean reading of the barometer was 29.935 inches; the highest, 30.405 inches, on the 22d, and the lowest, 29.306 inches on the 19th. Monthly range, 1.099 inches. The mean relative humidity was 58.3 per cent. The mean temperature of May was 60.1°. The maximum temperature (932) occurred on the 19th, and the minimum (332) on the 3d. Monthly range, 60°. Rain fell upon twelve days, to the amount of 1.66 inches. Prevailing wind, northwest. The mean reading of the barometer was 29.987 inches; the highest, 30.351 inches on the 19th, and the lowest, 29.538 inches, on the 22d. Monthly range, 0.813 inches. The mean relative humidity was 59.1 per cent. The mean temperature of June was 72.1°. The maximum temperature (90°) occurred on the 30th, and the minimum (472) on the 10th. Monthly range, 43'. Rain fell upon thirteen days, to the amount of 3.54 inches. Prevailing wind, southwest. The mean reading of the barometer was 29.832 inches; the highest, 30.160 inches, on the 12th, and the lowest, 29.521 inches on the 6th. Monthly range, 0.639 inches. The mean relative humidity was 66.5 per cent. The mean temperature of the quarter was 61.3'; highest temperature (93) May 19th; lowest temperature (25) April 3d. Range during the quarter, 68'. Mean barometer, 29.918 inches; highest barometer, 30.405 inches, April 22d; lowest barometer, 29.306 inches, April 19th. Range during quarter, 1.099 inches. Mean relative humidity, 61.3 per cent. Rain or snow fell upon thirty-five days, to the amount of 8.08 inches. The mean temperature of July was 75.4°. The maximum temperature (96°) occurred on the 27th, and the minimum (532) on the 12th. Monthly range, 43'. Rain fell upon fifteen days, to the amount of 3.98 inches. Prevailing wind, northwest. The mean reading of the barometer was 29.911 inches; the highest, 30.217 inches, on the 24th, and the lowest, 29.565 inches, on the 18th. Monthly range, 0.652 inches. The mean relative humidity was 66.8 per cent. The mean temperature of August was 72.9'. The maximum temperature (94) occurred on the 28th, and the minimum (53°) on the |