168 REPORT—1890. 
The distribution of earthquakes of 1885, 1886, 1887, arranged 
according to the hours of the day at which they occurred, is as follows :— 
py uleeed | 1S | Se ees | | ee ae 
eee} E bs jdt Neon |e 
ee fee | ea pe | aS Pee eS ee 
A.M. 
12-1 Sg i21 41 61 8\ ei Siedeeelew [4 ceyl penleeee 
1-2 7/10! 3| 2] 2| 71.6] 1| 6] 6! 2! 6! 58 
2-3 Siliae) el etew dere db eal kesedetaeleeas|-45| eens 
Baht Bhs Bol Bel tB (odd-|- fd. BelebgedesBial) eked oB-| 0 eal eges 
Moe ech, Sling (ih 3 cd2de-4elh Sales aiedel hak soe 
5-6 | 4] 4/ 8| 2/16) 2] 6] 5) 3] 7] 4] 1] 62 |\ eo, 
ey -|-4). 5) 6) 31 6} 21-6) a:)104 41-31 en ey 
mg | 44-2.) £1 6|.-7'| 8 (184) oad at lle | 6 | ae 
S46 bis) 6 6 |6| 8 | 51 6) Stee | edo tsdeees 
Bedell SB Bo), Bale Bk Gal) 10, | eal aka eenl . codie alnes 
Tot | 10) alos) e| 118 cel ae) eit NY ademas 
giao ale ag} | 17 | Specie ees lobe Patt aie 
P.M. 
12-1 ais} @| 21) at wos | golsse ile |) tees 
129 10 abe | 08 27 | ad el alee lee toe ae 
ae | ido! ol 7 | i 1 8 | 7 |b eee ey eee 
Be 8) i | OT eel ie) a all ce ral eee teal dee 
45.) “Sth g | Bt 9} 64 cat ol. By uleereh eet? 5 tee 
B86 | 4] 9/5) 2) 4| 7] 4|—| 4] 3] 1] 1] 48 lao 
627. eg hoa eel eae 1. 6) ae leds iota! Teen 
7-8 ry (eae lee) nee) eee Deri on Bere ors D2 Re gel 2 = 
8_9 Hell 6G he 2B) | 71 BAGS alc dual i LL ada 
o10.) 21 6] 6) 21 51 51 81 GaSe Bil, 6 lod wes 
WATT IO fart go) 126.) cela eel ee eae ee 
W=1% | -6,) 0 | 4./31=6) 26 |. 21401) aol 6 Bl kota 
cars! 111] 141] 116] 104] 169] 114 106| 111 | 129| 94 | 104] 138] 1,437 
SEVERE HARTHQUAKES. 
The most severe earthquakes which occurred in 1887 were as follows : 
July 22 in Echigo; January 15 near Tokio and Yokohama; September 
5 in Slumosa; and February 2 in Owari. 
The earthquake of January 15, which destroyed a number of houses 
and opened fissures in the ground, was briefly described in the Report 
for 1887. The diagram of the motion of this earthquake, together with 
diagrams of other large disturbances taken at the Imperial Meteorological 
Observatory in Tokio, are forwarded for inspection. 
The earthquake of July 22 was at least as severe as that of January 
15, cracking walls and opening many fissures in the ground. 
EARTHQUARES IN CONNECTION wiTH Macnetic anp ELectric PHENOMENA, 
1. Magnetic Phenomena. 
Amongst seismological records we find many accounts where magnets 
and magnetometers have been affected at or about the time of earth- 
quakes. On November 14, 1799, after the earthquake of Cumana, Hum- 
boldt observed a diminution in dip of 48 minutes, and also a change in 
declination. In 1822 Arago and Biot simultaneously observed move- 
ments in magnetometers at Paris at the time of slight shocks in Switzer- 
