26 
THE REV. W. WHEWELL ON THE TIDES OF THE PACIFIC, 
San Francisco. — High water heights : diurnal inequality=2 ft. Low water heights : 
diurnal inequality = ft. Iligh water times : diurnal inequality = 2 hours. Low 
water times : diurnal inequality = 2 hours ? 
Sitka, — High water heights : diurnal inequality = 2^ ft. Low water heights : diur- 
nal inequality = 4 ft. High water times : diurnal inequality = 2 hours. Low water 
times : diurnal inequality = ^ hour: irregular. North of this point the observations 
are too imperfect to show diurnal inequality till we come to 
Kamtschatka. Petropaulqfsk— High water heights : diurnal inequality = 1 ft. 
Low water heights : diurnal inequality = 4 ft. High water times : diurnal inequality 
= 4 hours. Low water times : diurnal inequality = 1 hour. 
The tides of Sitka and Petropaulofsk have already been noticed in the Philoso- 
phical Transactions*. I there pointed out the large diurnal inequality of times at 
high water, and of heights at low water, which these places exhibit ; — also the 
curious fact, that apparently the maximum and zero of the diurnal inequality of high 
water do not coincide in time with those of low water, but rather alternate with 
them. 
47. I proceed to the islands of the Pacific. 
Bow Island. — There appears to be a diurnal inequality of the time of high water, 
but necessarily doubtful, from the smallness of the tide. 
Tahiti. — Here also there appears, in a portion of the tides, to be an alternation of 
late and early, approaching to the nature of diurnal inequality. 
Feejee Islands. — High water heights : an evident diurnal inequality of half a foot. 
New Ireland. — Something of the nature of diurnal inequality in the high water 
times, but very doubtful. 
CoREAN Archipelago. Black Island, — High water heights : diurnal inequality 
= 2 ft. High water times : diurnal inequality = 2 hours. 
New Zealand. Bay of Islands. — A series of observations including two semiluna- 
tions by Sir J. C. Ross. 
High water heights : diurnal inequality = | ft. : very regular. 
High water times: diurnal inequality = 1^ hour: regular. 
We now come to Australia, and have the following results for the heights: — 
Cape Upstart . . . . 
Port Bowen . . . . 
Bass Straits. 
Kent’s Group . . . . 
Port Refuge . . . . 
Western Port . . . . 
Port Phillip . . , . 
Preservation Island . . 
Diurnal inequality. 
Not observed. 
High water, 3 ft. Low water, 1 ft. 
Low water ? 
High water ? Low water, 2 ft. 
High water, 2 ft. Low water, 2| ft. 
Low water ? 
Low water, 2 ft. 
* 
1840, Part 1. p. 161. 
