gt eee a ee ae Sem 
Prof. Loomis on the Distribution of Thunder Storms. 97 
Taste V1—Continued. 
Place. Latitude.| Longitude. sedan bs Authority. 
of RF 
Skara, Sweden, 5822 | 1228E.| 92) 95 |Kamtz Met,, ii, 461. 
Stockholm, Sweden, |59 21 18 4E.} 93] 10 “7 4 Ae 
Spydberga, 59 38 9 E| 77| 8 “« “eee o 
Bogoslowsk, Rus, (5945 | 5959E.| 2 1‘ |Berghaus Annalen, 200, 6. 
Petersburg, Rus, [5952 | 3025E.| 12°4| 10 |Kéamtz Met. ii, 459; Arago. 
, Russia, 6015 | 2210E.| 10 } 12 es he Pe. 
Bergen, Nor., 024 | 518 58| 17 > 3s ae. 
Sond Or, Nor., 62 30 6 20 3-9} 12 “ “ “6 
Archangel, Rus., 64 32 40 88 E 65 | 18 Berghaus Annalen, 200, 5. 
_ Reikiavik, Iceland, [64 8 | 22 WW.) 4 2  |Arago Met., p. ill. 
Fort Franklin, 6512 |12812W 1 2 “ <a“ 4 
Baffin's Bay, 6530 | 80 Sas aoe? cae ince te OE 
Melville Teland, 71447 (11049 W.) .0 2 # ie ae ce 
At Sea, 75 100 Wiis o 1 « ees aan | 
and diminish as we proceed towards the poles. It is also evi- 
the observations included between different parallels of latitude. 
We thus find that:— 
between lat. 0° and lat. 80° 51°6 
, 130“ “ 50 | the average number | 19:9 
oe OD of thunder storms { 14-9 
pap 8:70 annually is 4:0 
beyond “70 0-0 
Maury’s storm and rain charts of the Atlantic Ocean furnish 
Most important information on the same subject. The following 
table presents a summary of the results of these charts. The 
Ccean is divided into squares by parallels of latitude drawn at 
Intervals of five degrees from each other, and meridians of lon- 
gitude at intervals of five degrees. Each square of the follow- 
ing table contains three numbers. The first shows the number 
of days of observation within the given square; the second 
grees of north latitude, and between the meridians of 65° and 
70°, the first number is 548, which shows that 1644 observations 
have been obtained in that square. Each observation represents 
® period of 8 hours, so that 1644 observations represent 548 
days, During this period, lightning was reported on 44 days, 
Which is at the rate of 29 cases for one year. 
SECOND SERIES, Vor. XXX, No. 83,—JULY, 1860. 
13 
