NOTES ON THE JAMAICA EARTHQUAKE 699 
were carefully kept during the period of disturbance, which lasted 
overayear. The table of these shocks shows nearly the same features 
throughout as the tabulated data above. Just what the factors are 
which give rise to the peculiarities of distribution are not known, but 
they appear to be of a general rather than a local nature. 
SEASONAL DISTRIBUTION OF JAMAICA EARTHQUAKES, 1880-1906 
I II Tit Activity 
Sprunga(March yy Appral yiMay)\ iss miter «eras eae. 21 10 I 45 
Summer (jumerejulysyAUe ust) hacemos. pete scree 16 II I 42 
Autumn (September, October, November) .... 4I II 2 Cat 
Winter (December, January, February)....... 35 9 5 73 
DIURNAL DISTRIBUTION OF EARTHQUAKES 
Based on 163 shocks previous to November 25, 1906, and go shocks after that date 
Hour I II III Activity 
ADU Mnewargncctetareen ae 08 Ai 7 2 I I5 
I A. M.. 8 3 I 1023 
DJG I NAAN Corrs esa ne TE Th 5 2 20 
3 A. M.. 13 9 21 
Al, INS hte 2 12 
GASES cer aet dre asticnntnlerghee 9 5 IQ 
OAM player mines 7 I : 9 
7 A. M.. 12 3 I 22 
8 A. M.. IO I 12 
g A. M.. 5 3 ae 
TOMAREM ua tele sete tah atin, aves ae 
ToL Aap Viners pias isnot ether Ss 7 ra 5) 
LEAN pay aa ee RO a RR 9 2 14 
I P. M.. 6 2 IO 
2P.M.. 9 B I 19 
QED Naan cakcenr eins ceases 4 4 2 20 
4.P. M.. 7 2 ei II 
5 P. M.. 5 2 ae 9 
6 P. M.. 5 I oe 7 
7 P. M.. 6 I ut 8 
Sub eIMeme eee esse edaa cris 4 4 I 16 
9 P.M... II I i 17 
TOPP MN verer eee eee = 12 4 I 24 
1 Wied 28 a ve 9 I | I I5 
Of the disturbances preceding the principal shock, that occurring 
in November, 1906, was the most severe, rattling dishes, shaking a 
few bottles, etc., from shelves, and producing slight cracks in a few 
instances, being a stronger shock than any subsequent to the main 
disturbance. 
