OBSERVATORIES AND THE DATA OBTAINED. 61 
sponding displacement of the earth. The period relates to the period of the earth-waves 
as recorded on the seismogram, and not to the natural period of the pendulum. Some 
of the times and other quantities relating to the records were sent by the directors of 
the various observatories, some were extracted directly from the seismograms. <A dis- 
cussion of any special characteristics which a seismogram may have follows the records 
of each station. 
Usually different instruments at the same station give somewhat different times for the 
arrival of the various phases. The cause of these differences is not known and the aver- 
age has been taken as the record of the station. In a few cases some instruments have 
evidently been late in responding to the disturbance; their records have been disregarded. 
The direction of a station is the angle at the origin between the meridian and the great 
circle passing thru the origin and the station. 
In order more readily to find the data of any particular station the following alphabeti- 
cal list refers to the records and the seismograms. 
List of Observatories. 












STATION. Pace. mae oa ee STATION. Paar. PERMOGE AM, 
Agram (Zagreb), Hungary . ./| 93 Age Messina ltalyows cer. = | 1, LOO 12 
Alameda, California . . . .| 63 3 Mizusawa; Japan's of) (0. e273 ee 
Albany, uNeweXOrKue) = fos ean eed 8 Moscow, Russia . Senile SA a 
Apia, Samoa. . Aas "Are: ae Mount Hamilton, California. .| 64 3 
Baltimore, Maryland oP eae gL 1 Munich, Germany 2 eee See RS 5 
Patavign Javay eis Gey sors iia ae!) 106 15 Oakland, California .y) ive muyan ~)) 62 3 
Belgrade, Servia ... .. .| 97 ee O’Gyalla, Hungary. . .. .| 91 ee 
Dergen; norway 9.0. 8 pa fon Osaka, Japan-2.°7' 4 08) 20" eve 15 
Berkeley, California . .-. .| 62 3 Ottawa, :Canadava) ei: tones, ooh), 09 10 
minsvon, oogiand 9 s,s 3 ty TO 1 PRIsICy, SCOUANG, 4 Gos) udp.- 4. 10 1 
Dombay, ludiam no. se) ee elOS 2,15 Pavia, Italy . . mera SS 7 
Budapest, Hungary . evel Hone she Perth, Western Australia . . | 106 2 
Caggiano (Salerno), Italy ee OD wed Pilar (Cordoba), Argentina . .| 95 i 
Cairo (Helwan), Egypt 2 P0104 1 Pola, Austria . . PS. A 194. oa 
Calamate, Greece . . . . .| 102 15 Ponta Delgada, Azores . . . 73 1 
Calcutta, India. . . Pee a LOo 1 Porto Rico (Vieques) . . . -| 71 8 
Cape of Good Hope, Africa . . | 107 1 Potsdam, Germany . 81 4,5 
Carloforte, Sardinia, Italy . .| 97 a Quarto- Castello (Florence), Italy 94 6 
Carson City, WNevadae. i 5- | 65 3 Rio de Janeiro, Brazil. . 101 oe 
Catania, Italy . . ee ae LOL 13 Roccaidi-Papa, THaly, <asyet eis 06 14 
Cheltenham, Maryland Mee Tu 70 8 Salo, Italy. . Se Oa Bo a 
Christchurch, New Zealand. . | 103 - San Fernando, Spain cea tal * GO 1 
Cleveland, Ohio Ae Ger es i. 08 3 San Jose, California . . . .| 63 3 
Coimbra, Portugal . eee Paes) 82 1 Sarajevo sbOsnian etnies. |) OF 15 
Dorpat (Jurjew), Russia. . .| 78 10 Shide,.England:. 7. EP Ue wl PTE 7 a2 
Edinburgh, Scotland . . . .| 74 1 Sitka, Alaska 9. 3 nV dais [ev 66 11 
Fiume, Hungary . 74.502 ey Sofia, Bulgariasj 6. he oe er ~) 100 13 
Florence (Ximeniano), Italy tie. oo 6 Strassburg, Germany . . . .| 84 14 
Florence (Quarto-Castello), Apu 94 6 Tacubaya, D. F., Mexico . .| 67 9 
Gottingen, Germany . . 81 12 Wadotsusvapane tr jen) o) eigen 04 22 
Granaaa, Spain . .> . .)._.}) 87 14 Taihoku, Formosa . . . ...| 99 15 
Hamburg, Germany . ee me Taschkent, Turkestan. . . .| 102) 2,13 
Honolulu, Hawaiian Islands .| 68 2 LitlSeUSss meer ee erent. 20s 1) 102 ae 
Irkutsk, Siberia . (ob  2aa1s Tokyo, Jaman 6. oc. one cn Sethe tS 11 
Ischia (Grande Sentinella), Italy 98 7 ‘Toronto, Canada: 9 se. |) Os 1 
Ischia (Porto d’Ischia), ai ; 98 7 lortosage pain. :.0" sie icc.) 086 oF 
Jena, Germany. . 5 || wes 11 Triest, Austria .. suck thou 
Jurjew (Dorpat), Russia. . .| 78 10 Trinidad, West Indies . . .| 72 att 
Kew, Englands .956% by 34): 77 1 Uccle, Belgium BG, OS Be Pepe! 2a 
Kobe, SADR 5 eens eet. at ae 5 UnesiewSweden . . *. 5 3 (sy 75 9 
Kodaikanal, India. . . . .| 106 2 Urbino: ltalys ) 7. - ae ley 95 -. 
Kerakans Austria | sees eee |e) 13 Victoria, British Columbia . .| 66 1 
Kremsmiinster, Austria . . .| 86 2 Vienna, Austria . . 89 9 
Laibach, Austria -.-- . .-*. | 90 he. Washington, District of Columbia 69 8 
Leipzig, Germany . . . . .| 82 arn Wellington, New Zealand. . . {| 102 2 
Los Gatos, California. . . .| 64 3 Yountville, California. . . .| 62 3 
Manila, cane nee Islands . . | 103 4 Zagreb (Agram), Ponte eee 93 Met: 
Mauritius. . . ee LO, 2 Zi-ka-wei, China. . aie, GOD 15 




