METEOROLOGICAL OBSERVATIONS FOR THE MONTH OF OCTOBER, 1890, FURNISHED

9 P. M. to 7 A. M.

The mean atmospheric pressure, 29 956 inches, was .120 inch below the average, and is the lowest mean monthly pressure recorded since the opening of the Bureau for October. The highest barometer, 30.312 inches, occurred at Jefferson and Wooster on the 22d, and the lowest, 29.275 inches, at sandusky on the 29th. The meant mperature for the northern section was 51.3; for the middle section, 52° 5; for the southern section, 54.3, and for the State, 529.7. These means are 1°.2, 106, 1°.3 and 1°.4 above the averages for the sections and State for Octobr. The highest temperature for the month, 85° 0. ocenrred on the 12th at Georgetown and Logan, and on the 13th at Hanging Rock, Waverly and Logan The lowest temperature was 28°7, at Yellow springs on the 30th. Light frost was reported from all sections on the 5th 8th. 19th and 20th and heavy frost from all, on the 21st, 30th and 31st. Heavy frosts also occurred in the northern and middle sections on the 20th, 22d and 28th. Ice was reported generally on the 30th and 31st. The mean relative humidity. 876 per cent., was 89 per cent. above the average. Precipitation was general in all sections on the 1st, 2d. 3d, 4th, 5th, 6th, 1th, 12th, 18th, 16th, 18th, 19th, 23d, 24th, 25th, 26th and 29th, in the northern and middle sections on the 10th, 14th, 20th, 27th, 28th and 30th, and in the southern section on the 22d. Local rains occurred in all sections

THE STATE BOARD OF HEALTH BY THE OHIO METEOROLOGICAL BUREAU.

15.5

4 27 .138 S.W.

28.7 30th. 56.3 16.3 39.5 15th. 3.7 29th. 4.5 10.0 16.5

on the 7th and 31st. The mean rainfall in the northern section was 5.54 inches; in the middle sec tion 3.79 inches, and in the southern section 3.47 inches. These means are 2 79 inches, 1.13 inches and 060 inch above the averages for the sections respectively. The mean for the State, 4.27 inches, is 1.51 inches above the October average, and is the largest October rainfall since 1883. The greatest monthly rainfall was 8.29 inches at Jefferson, and the least, 1.45 at Greenville. The greatest amount in twentyfour consecutive hours was 3.82 inches at Wooster on the 12th and 13th.

The highest wind velocities

reported during the month were 38 miles W. at Cincinnati, and 36 miles W. at Columbus on the 18th; 29 miles N. W. at Cleveland on the 29th; 40 miles S. W. at Toledo on the 16th: 34 miles N. at Sandusky on the th, and 40 miles W. at Ohio State University on the 18th. The greatest daily movement was 519 miles at 0.8 University, on the 14th, and the least, 47 miles at Sandusky, date not given. Total movement-Cincinnati, 5,503 miles; Columbus. 5,380 miles; Cleveland.5.831 miles; Toledo, 5,773 miles; signals received from Washington, computed from reports of the observers, was 82 for weather and Sandusky, 6,133 miles, and O. S. University, 7,346 miles. The percentage of verification of weather

89 for temperature.

TABLES SHOWING

DAY AND NIGHT OBSERVATIONS FOR OZONE,

TAKEN BY MEANS OF SCHOENBEIN'S TEST PAPER.

RECORDED

ACCORDING TO A SCALE OF TEN DEGREES OF COLORATION.

1