I 



in different parts qftlie Earth's Sioface. 



327 



Places of Observations. 



" 



Port du Nord 



Port du Sud 



Surrobaya in Java 



Amboina - 



Lima - 



Magnetic Equator in Peru 



Torapenda - , 



Loxa 



Cuenca 



Quito 



St Antonio 



St Carlos 



Popayan 



Santa Fe de Bogata 



Javita 



Esmeralda 



Carichana 



St Thomas 



Carthagena 



Cumana 



Mexico 



Atlantic Sea 



B. 2o°46'n.L.41°.26'w. F 



— 11 44 32 — 



— 12 34 33 14 — 



— 14 20 28 3 — 



— 20 8 8 34 — 



— 21 36 5 39 — 



— 25 15 36- 



Portici 



Neapel 



Borne 



Vesuv. Crater 



St Cruz, TenerifFe 



Valencia 



Florence 



Atlantic Sea, 32° 16' n. 2 



52' w. 

 Barcellona 

 Marseille 

 Nimes , - 



Mailand 

 Montpellier 

 Airola 

 Turin 



Medina del Campo - 

 Lans le Uourg Mont Cenis 

 Como 

 St Michel 

 I.yon - - 



70 



25 



20 



9 







Dip. 



South. 



75° 50' 



48 

 40 

 3? 

 59 

 



North. 

 3 11 



5 



8 

 18 

 14 

 20 

 20 

 24 

 24 

 25 

 30 

 35 

 35 

 39 

 42 



11 

 41 

 45 

 52 

 56 

 47 

 60 

 60 

 61 

 61 

 62 

 62 

 63 

 63 



64 

 64 

 65 

 65 

 65 

 65 

 65 

 66 

 66 

 66 

 66 

 06 

 66 



24 

 43 

 22 

 25 

 47 

 53 

 16 

 19 

 58 

 24 

 6 

 15 

 47 

 10 



46 

 57 



8 

 55 

 42 

 49 

 18 



5 

 35 

 57 





 25 

 38 

 51 



21 



37 



10 



23 



40 



53 



55 



3 



9 



9 



12 



12 



14 



Inten- 

 sity. 



1.5773 

 1.6133 

 0.9348 

 0.9532 

 1.0773 

 1.0000 



1.0191 

 1.0095 

 1.0286 

 1.0675 

 1.0871 

 1.0180 

 1.1170 

 11473 

 1.0675 

 1.0577 

 1.1575 

 1.1070 

 1.2938 

 1.1779 

 1.3155 



1.1779 

 1.2617 

 1.2300 

 1.2830 

 1.2510 

 1.2617 

 1.2830 

 1.2883 

 1.2745 

 1.2642 

 1.1933 

 1.2723 

 1.2405 

 1.2782 



1.2938 

 1.3482 

 1.293K 

 1.2938 

 1.3121 

 1.3482 

 1.3090 

 1.3364 

 1.2938 

 1.3227 

 1.3104 

 1.3488 



i ,33a i 



Places of Observations. 



St Gotthardt 

 Mont Cenis 

 Ursern 



Al corf | 



Atlantic | 37° 14' n. 

 Sea f 38 52 — 



Madrid 



Tubingen 



Atlantic Sea38°52'n 



Fenol 



Paris 



Gottingen - 



Berlin 



Carolath 



Berlin 



Danzig 



London 



Ystad 



Schleswig 



Copenhagen 



Odense 



Helsinburgh 



Kolding 



Soroe 



Friedrichsburg 



Aarhuus 



Aalborg 



Odensala 



Friedrichshaven 



Gothenburg 



Altorp 



Korset 



Quistrum 



Skieberg 



Elleoen 



Helgeroae 



Soner 



Christiana 



Byenberg 



Bogstad 



Bogstadberg 



Nasodcn 

 Biiruin 

 Bolkevjoe 

 Ingolt'sland 

 Norstcboe 

 Drammen 

 Mnursater 

 Ullensvang 

 Gran 

 Konpsberg 



3° 30'0" 

 3 40 



66° 

 66 

 66 

 66 

 67 

 67 

 67 

 68 



3 Q 40*0". 68 

 68 

 69 

 69 

 69 

 68 

 68 

 69 

 69 

 70 

 70 

 70 

 70 

 70 

 70 

 70 

 70 

 71 

 71 

 71 

 71 

 71 

 72 

 72 

 72 

 72 

 72 

 72 

 72 

 72 

 72 

 72 

 73 

 73 

 72 

 73 



Dip. 



22' 

 22 

 42 

 53 

 30 

 40 

 41 

 4 

 11 

 32 

 12 

 29 

 53 

 21 

 50 

 44 

 57 

 13 

 36 

 36 

 50 

 52 

 53 

 57 

 59 

 13 

 27 

 39 

 48 

 58 

 14 

 24 

 27 

 29 

 38 

 39 

 41 

 34 

 45 

 34 

 13 

 2 

 11 

 15 



