ON EFFECT OF WIND AND ATMOSPHERIC PRESSURE ON THE TIDES. 525 
above normal, the wind being from 8.W. with average force of 5-60, and 
mean barometer reading 29°44, or 0°40 low. The afternoon tide on the 
15th was 3 feet above normal, and that of the following morning 2 feet 
10 inches above, the force of wind varying from 5 to 8. 
At Belfast from 10th to the 16th the tides averaged 1:40 above 
normal height, wind principally from S.W., with mean force of 5-50, 
mean barometer 29°19. The p.m. tide of the 15th was 4 feet 6 inches 
above the normal height, being the highest tide of which there is any 
record. The two following tides were raised 1 foot 5 inches and 1 foot 
11 inches. 
At Glasgow the wind from the 11th to the 16th was principally from 
the 8.W., blowing with force of 8 on the llth to 6 on the 16th, the 
barometer averaging 1:26 below the mean, and the lowest reading being 
28°31 on 11th. On the 11th high water occurred three hours before the 
proper time, and rose 6 feet above the natural height ; on the following 
day the tide was raised 2 feet 1 inch. On the 16th the tide reached high 
water 2} hours before the proper time, it then ebbed 2 feet 6 inches and 
flowed again 3 feet, the height reached being 5 feet above the natural 
height. 
Gale, December 1895. 
From the Ist to the 7th the wind was blowing from the 8.W. with a 
mean force of 5, increasing to a gale on the 5th and 6th, the force on the 
west coast being from 8 to 9 and on the east from 5 to 6. The mean 
barometer on the east coast was 29-87 at the North Foreland, and 
29°44 at Leith, showing a gradient of 0°43 ; and on the west coast 30-04 
at the Scilly Islands, and 29-10 at Ardrossan, a gradient of 0°94, the 
mean resultant being a 8.W. gradient of 0-60. 
At Leith on the 3rd, 4th, and 5th the wind was from the S.W., the 
average force was 4:83, the maximum on the 5th being 6. The average 
increase in the height of the tide was 1 foot 3 inches, the maximum 
increase being 2 feet 6 inches on the 5th. On the 6th and 7th the wind 
was from the N.W., mean force 3°75, mean increase of tide 2 feet, greatest 
force of wind 5, and greatest increase of tide 2 feet 5 inches. 
Tt will thus be seen that at this station the tides were increased both 
by S.W. and N.W. winds. 
At Grimsby, near the mouth of the Humber, the wind from the Ist 
to the 5th was from the 8.W., blowing with a mean force of 5, in¢reasing 
toa gale with a force of 8 on the 5th. From the 6th to the 8th the 
direction was from the N.W., with force of 6 to 7; and from the 8th 
to the 10th S.W., with force of from 3 to 6. The mean force for the 
whole period was 5. On the Ist the tides were raised at Grimsby 
1 foot 3 inches and 8 inches ; on the 2nd, 1 foot 9 inches and 3 inches 3 on 
the 3rd, 2 feet and 2 feet 2 inches ; on the 4th, 11 inches in the morning ; 
on the 5th the morning tide was depressed 5 inches and the evening tide 
raised 2 feet 9 inches ; on the 6th the tides were raised 3 feet 3 inches 
and 1 foot 8 inches ; on the 7th, 3 feet 1 inch and 3 feet ; on the 8th, 
1 foot and 1 foot 1 inch; on the 9th the morning tide was depressed 
8 inches and the evening tide raised 2 feet 7 inches; and on the 10th 
the morning tide raised 1 foot 6 inches, the mean increase for 16 tides 
being 1°80 foot. 
At Hull, the force and direction of the wind being the same, the mean 
increase for 15 tides was 1:57 foot. On the Ist the tides were raised 
