oe 
OC 
ON EFFECT OF WIND AND ATMOSPHERIC PRESSURE ON THE TIDES. 515 
DIRECTION (HULL, 1895)—continued. 
Wind 
Mean 
Increase in Inches 
f Height = 
. aay Mean Maxi- pions Maxi- 
Force me Tr Mean mum 
Horeca (Wesehs | 
= = a = —i 
Low Tides: 
South-east . . .| 24 3:42 6 18°65 | 10-02 25, | 
| South-west . F : 20 4:35 8 19:07 14-25 36, of 
; ners = a os, 
44 3°83 ae ae Cae ee 
| 
A i 
North-east .  .. + 3°25 4 15°82 | 10-75 14} 
North-west . i F 6 4:00 be) VRBO ‘LT OQ) See aees 
10 3°62 Sst en ee: a 
' 
WIND AnD TrpEes.—Forcr. 
Hull, 1895. 
a 
Mean Variation of Tids Maximum Variation}; 
a 
Force of | Number of Mean Height Se : | pa Se a 
= 3 of Tide above j j 
Wind Tides | L.W.S.T. | Per Foot Per Foot - 
| Inches Rise of Inches Rise of ; 
| Tide Tide | 
Feet | | 
3 104 19°83 11°82 0:59 4 2: | 
4 65 | 19-23 13:09 0°67 32 106 =| 
5 46 | 19°26 13°68 0-71 29 150 | 
6 14 | 18°82 15:14 | 0:80 34 188 «| 
7 to 10 12 19°58 21°66 | 1:10 52 2°65 
| 241 19°34 1607 | O77 a 23) 
The figures in the above tables are abstracted from the tidal register 
kept at the Albert Dock, Hull, for the year 1895. ; 
The heights of the tides given are above low water of spring tides. 
This has been taken as 6°15 feet above the sill of the Albert Dock. The 
calculated heights have been taken from the Admiralty Tide Tables. 
Comparing the Hull tides with those at Boston for the same year, it 
will be seen that the wind was more effective in raising than in depressing 
the tides at Hull, 79 per cent. of the whole being raised against 21 per 
cent. depressed. At Boston the effect was more equal, 59 per cent. being 
raised and 41 per cent. depressed. Southerly winds appear to have much 
more effect in raising the tides at Hull than lower down the coast. The 
mean effect of the force of wind on the tides is about the same at both 
ports. 
LL2 
