RECORD OF AFTER-SHOCKS. 
Record of after-shocks — Continued. 
411 








Southampton Shoal 
Mt. Hamilton..... 
Day. B sg ed of Duration, |Intensity. Locality. 
hoo ine <8 secs. 
reer ee kl GOW. 7 |) 2. er esc eee. San Francisco .... 
Crore ee see ee ee I-I Mt. Hamilton..... 
OFA 22 as ee mes eae 28 eee ee San Francisco .... 
6 44 11 Geese IIl— Berkeleyge 2.4255 
85325) Snes th I ey Oe eel | ar ae Mt. Hamilton..... 
Or4G: 34 tena eee II Mt. Hamilton..... 
OLOU cae roan tate soe IV Scott’s Valley .... 
CLovee ie are IV clare ee tere 
GRD pemee on cles cre ene ee Ue I Se Oe ee ee iio 
(Pod UU hs 2 tiers ase Ses ee ale (Te Cloverdale....-... 
ae O dae eee |e ee IV Scott’s Valley .... 
CF PAV bese: vege ar ise Oe ea eee Sausalito. 2).coee 
i, Byte ely | eee 1V Scott’s Valley .... 
fa eo Se, te te en (rn Sacramento......- 
bo dl OPE ea a 2S: 1 Bonita Pt. Lt. St.. 
SUaO (ee ceed eis ae ot Re ee Yerba Buena..... 
fo} AA De tees a Sb Ao Mile Rocks....-... 
See ee Te le eee Mare Island ...... 
sobs BIS Coie ie eons flan ay A | ee AT MIOCI eee ae. 
8 14 14 LOR ee IV-V | Berkeley ......... 
Sera 27 weve |e yon es. IV-V fe oer ee me 
8 14 28 
to } Vee een | Oars e San Francisco.... 
8 14 33 
SOULE rel OO aeyerees (ers ai cos II Mt. Hamilton .... 
8 14 45. en etal | Aterees Sacramento....... 
SLD ees meer | Pomk ee ML ey oe PGA tradooe a. ese ets 
Seiya eres beh eae A Riese ie Oakland occ 
SLO Reee rea ee Sale 2 =" Yount yillessen sees 
SES ees. Lasse? V Mile Rocks....... 
Selbek see, Dapee: V San Francisco 
SESE ee Alte III GOs Fics ies 
ShG eee pews Be WO; ee ee 
8 19 20 pubes V Oakland's eases 
S200 Werte dacs eee IV Scott’s Valley .... 
PPA pee See || Me IV Ow er ae 
SusQiese eee a ee ee ee 2 II PLnGlumMine == eee. 
S25) Weer oie Lake hae all SltockLOn = - a 
SA 2 ee See ee ak San Francisco .... 
SV 5 parent See vee IV Scott’s Valley .... 
SPOS ee es ee IV lapel dene Ae ae 
Oe 4 re we 2 ee ee toe San Francisco ....- 
OPLG 5 22ee— A eee Vina Mt. Hamilton..... 
OS ee ee ie eee IV Scott’s Valley .... 
ORO ora. se eek IV GGsn.n wee 
CeO se eel) « 1-2. (a SOS Mare Island...... 
WP. aE Mere Ee IV Scott’s Valley .... 
OL 2G are at cee See eee San Francisco.... 
OP 2 Gm) Open LO e cr 2 II Berkeley ......-.. 
OU ZS Soe Qe ees Ill San Francisco . 
9 
9 
9 
9 






Remarks. 

Light, N. E. 
BG, A. 
Light, N. E. 
F. L. 
San Francisco Light, N. E. 
Slight shock about 7 a. m. 
Be 1. 
FL. 
Slight shock soon after 8 a. m. 
Nearly vertical; toward NW.; 
no tremor, just a jar; 1 max. 
strongest at beginning; no 
clock stopt, no sound. 
Light. 
Smart 
Slight shock. 
Was looking at watch when * 
shock began, S. A. 
At Students’ Observatory, A. 
QO, L. 

Sharp twisting motion, A. G. 
McA, 
A. M. H. 
Severe. 
Strongest at middle, sound 
like cannon shot, following 
beginning 1s. Sharp. 
Northeast to southwest; 15 ad- 
ditional shocks by 1 p.m., 
duration 2-5s.,east to west, 
III-IV. 3chocks between 1 
and 3 p.m. 5 shocks between 
Apr. 18,3 p. m.,and Apr. 19, 
6 a, m. 
Howls 
About 8" 30™ a.m. 
Very light. 
N. E. 
Heals 
He Uy 
Sharp and short, A. G. McA. 
KOGA, MH: 
JRE Abe 
1th, Ub 
Toderate, A. G. McA. 
S. A. 
N.-S. Horizontal tremor 10 s. 
before, 1 sharp shock, rumb. 
One other between 6" 45™ and 
85 15™, R. G. A. 
LE be 
aby 


