|Hilo |155 3 |10 3 5|14 6|5,506|563|10,217 |30 or |{3 or 15 | | | | | | | | | 8 „ |{18 or 27| |Kahuliu |156 43 |10 3 12|14 13|5,611|579|10,437 | | | |Samoa |171 41 W.|10 3 57|14 58|5,773|566| 9,972 | 12 ft. |10 | |Taurauga |176 11 E.|10 8 15|19 16|5,615|427| 5,697 | | | |Wellington |174 30 |10 7 22|18 23|5,574|445| 6,168 | 11 „ |10 | |Akaroa |172 59 |10 7 28|18 29|5,542|440| 6,031 | | | |Lyttelton |172 45 |10 7 29|18 30|5,558|441| 6,055 | | | |Kameishi |140 50 |10 12 37|23 38|8,844|549| 9,378 | 6 „ |15 | |Hakodate |140 50 |10 14 7|25 8|8,778|512| 8,169 | 7 „ |20 | +-----------+---------+---------+-----+-----+---+-------+--------+---------+ In Dr. Geinitz’s paper there are also some slight differences in the times at which the earthquake phenomena were observed at various localities. These, however, are but of minor importance. At the end of the paper by Dr. Geinitz two interesting tide gauge records are introduced, one from Sydney and the other from Newcastle. These appear to show a marked difference in the periods of the sea waves at these two places.[84] _Comparison of velocities of wave-transit which have been actually observed, with velocities which ought to exist from what we know of the depth of the Pacific by actual soundings._—From a chart given in ‘Petermann’s Geograph. Mittheilungen,’ Band xxiii. p. 164, 1877, it is possible to draw approximate sections on lines in various directions across the bed of the Pacific. From the origin of the shock to Japan (Kameishi) the line would be as follows:— about 7,441 miles 15,000 feet deep 1,100 „ 18,000 „ 160 „ 27,000 „ 80 „ 12,000 „ 60 „ 6,000 „ On account of the Tuscarora and Belkap Deeps this would be the most irregular line over which the wave had to travel. From the origin to New Zealand (Wellington) the line would be about 5,274 miles 15,000 feet deep. „ 300 „ 12,000 „ From the origin to Samoa the line would be about 5,773 miles 15,000 feet deep. From the origin to the Sandwich Islands (Honolulu) the line would be almost 6,634 miles 15,000 feet deep and 60 „ 12,000 „ By Scott-Russell’s rule, or, what is almost identically the same, by Airy’s general formula, we can calculate how long it would take such waves as we have been speaking about to travel over the different portions of each of these lines, and by adding these times together we obtain the time taken to travel across any one line. I have made these calculations, but as I get in every case answers which are too small, I think it unnecessary to give them. The actual times taken to travel the distances just referred to were,