+---------------------+--------+----------+-------+--------+--------+ | |Distance| | |Velocity| Mean | | Observation | from | Arrival | Time |in feet |depth of| | stations |Iquique | of wave | taken | per | ocean | | | geol. | |by wave|second | in | | | miles | | | |fathoms | +---------------------+--------+----------+-------+--------+--------+ | | | h. m. | h. m. | | | |Taiohāc (Marquesa | | | | | | | Islands) | 4,086 | 8 40 A.M.| 12 15 | 563·8 | 1,647 | |Apia (Samoa) | 5,740 |12 0 „ | 15 30 | 610·4 | 1,930 | |Hilo (Sandwich | 5,526 |10 24 „ | 14 0 | 667·9 | 2,310 | | Islands) | | | | | | |Kahuliu „ | 5,628 |10 30 „ | 14 5 | 675·2 | 2,361 | |Honolulu „ | 5,712 |10 50 „ | 14 25 | 669·7 | 2,319 | |Wellington (New | 5,657 | 2 40 P.M.| 18 15 | 524·2 | 1,430 | | Zealand) | | | | | | |Lyttelton „ | 5,641 | 2 48 „ | 18 23 | 519·8 | 1,400 | |Newcastle (Australia)| 6,800 | 2 32 „ | 18 7 | 633·0 | 2,075 | |Sydney „ | 6,782 | 2 35 „ | 18 10 | 631·4 | 2,065 | |Kamieshi (Japan) | 8,790 | 7 20 „ | 22 55 | 649·0 | 2,182 | |Hakodate „ | 8,760 | 9 25 „ | 25 0 | 592·5 | 1,818 | |Kadsusa „ | 8,939 | 9 50 „ | 25 15 | 604·9 | 1,895 | +---------------------+--------+----------+-------+--------+--------+ The mean depths represent a mean of two sets of calculations, one made with the aid of Airy’s formula, and the other by Scott-Russell’s formula. The result of my own investigation about this disturbance, the origin of which, by several methods of calculation, is shown to have been beneath the ocean, near 71° 5′ west long., and 21° 22′ south lat., are given on next page. Dr. Geinitz considers that his calculated depths of the ocean and those obtained by actual soundings are in accordance, a result which is diametrically opposed to that which I have obtained.