METEOROLOGY AND ALLIED SUBJECTS. 



305 



maximum frequency is shown in the following table, where the fourth 

 column (B) contains the total number of auroras observed at the given 

 stations during the years for which we have the record, the fifth column 

 (E) gives the number of auroras recorded in Fritz's catalogue as having 

 been observed in Central Europe during the same years, and the last 

 column (M) gives the mean relative frequency of visibility of the aurora 

 for the respective places for the interval from 1700 to 1872, as computed 

 by the formula 



B 



M=28 



B 



Station. 



Lati- 

 tude. 



Longi- 

 tude. 



Makerstoun 



Dunae 



Christiania 



Upsala 



Enare 



Ericknaess 



Sand wick Manse 



Drontbcim 



Talvig 



Kaafjord 



Kilduin 



Nova Zembla 



Do 



Werschene Kolymsk . . . . 



Nyachne Kolymsk 



Iceland 



Do 



Baerentz Island 



Spitzbergen 



Do 



Franz Josef Land ... 



Saint Lawrence, N. T 



SoniPierville, N. Y 



tJtica, N.T 



Sauk City 



Toronto, Canada West . . 



Depauville, N. Y 



]|"rnnklin. Me 



St. Martin 



Albion Mines 



Quebec 



Matawagomingen 



Michpocoton 



Moose Factory 



Fort Albany 



Martin's Falls 



■Cumberland House 



Fort Goorgo 



Fort Chipewyan, &c 



Pelly aud Lewis 



Fort Simp.son 



Frances Lakes 



Fort Hope 



Fort Reliance 



Fort Knteipriso 



Fort Nomiann 



Fort Franklin 



Yukon 



Pe.la paver 



For t (Confidence 



Kotzelme Sound 



I'elix and Sheriff Harbor 



Point Harrow 



Fort Canada 



Lancaster Sound 



Winter Harbor 



Itodthaab 



.56 N. 

 56 N. 

 60 N. 



60 ^T. 

 69 N. 

 63 N. 

 59TSr. 

 63 N. 

 TON. 

 TON. 

 69 N. 

 T3N. 

 T3N. 

 66 N. 

 69 N. 

 85 N. 

 65 N. 

 T5N. 

 T9N. 

 80 N. 

 T8N. 

 43 N. 

 43 N. 

 43 N. I 



43 N. I 



44 N. ! 



44 N. I 



45 N. I 



46 N. 

 46 N. 

 4T N. 

 4TN.? 

 48 N. 



51 N. I 



52 N. i 

 52 N. I 

 54 N. j 

 54 N. I 

 59 N. 



61 N. ! 



62 N. I 



62 N. 



63 N. 

 68 N. 



64 N. 1 



65 N. 



65 N. I 



66 N. 

 6TN. t 

 6TN. I 

 TON. 

 TON. 

 TIN. 

 T2N. I 

 T4N. 

 T5N. 

 64 N. 



3E. 



2E. 

 HE. 

 18 E. 

 ?4E. 



22 E. 

 3 E. 



HE. 



23 E. 



24 E. 

 33 E. 

 54 E. 

 53 E. 



151 E. 

 161 E. 



20 W. 



20 W. 



20 E. 



15 E. 



16 E. 

 60 E. 

 TIW". 



B. 



T5W. 



TOW. 

 T6W. 

 TOW. 

 T4W. 



Ti W.' 

 80W.?i 

 85 W. 

 81 W. 



102 W. 

 123 W. 

 lUW. 



121 W. 

 129 W. 

 131 W. 

 109 W. 

 113 W. 

 12.5 W. 

 123W. 

 147 W. 

 1.14 W. 

 118W. 

 163 W. 



92 W. 

 150 W. 



94 W. 



81 W. 

 Ill W. 



52 W. 



184 



238 



965 



1,150 



358 



53T 



405 



86 



23 



111 



53 



51 



16 



30 



65 



149 



300 



18 



4 



100 



249 



308 



1T8 



1T4 



323 



1,242 



212 



61 



403 



63 



229 



40 



T9 



294 



61 



T9 



46 



5T 



182 



129 



253 



66 



39 



200 



148 



32 



49 



24 



201 



198 



32 



25 



256 



89 



9 



2T 



481 



19T 



166 



L149 



1,359 



469 



712 



292 



13 



6 



20 



35 



61 



10 



41 



5 



81 



211 



13 



2 



86 



164 



322 



165 



211 



406 



949 



479 



40 



358 



165 



322 



45 



84 



121 



57 



40 



10 



58 



35 



154 



148 



19 



18 



11 



3 



18 



11 



20 



238 



93 



8 



51 



78 



28 



3 



10 



133 



Even if the periodicity of the phenomena has a partial influence upon 

 ats magnitude and frequency, still it must, beyond all doubt, be that 

 S. Mis. 100 20 



