177 



ßrit. Assoc. in 1852) Ijeipt eö: it is a remarkable fact, which 

 has been established, Ihal Ihc magnetic force is greater in both 

 the northcrn and soulhern hcraispheres in the raonlhs of De- 

 cember, January and February, when Ihe Sun is nearesl lo the 

 earth, than in those ol May, June and July, when he is most 

 distant from it: whercas, il tlie eHects were due to temperature, 

 the two hemispheres should be oppositely instead of similarly 

 atlected in each of the two periods referred lo. 



" (@. 81.) Sttmontiu <p o g g e n b.3(nnalen93b.84. @.579. 



*^ (@. 81.) (Sabine on periodical laws discoverable 

 in the mean effects of the larger magnetic Distur- 

 bances, in ben Phil. Transact. for 1852 P. I. p. 121. (Äoö: 

 mos^ 23b. IV. ©. 73 9(0. 9.) 



«* (@. 81.) Äoömoö 93b. 111. @. 402. 



" (@. 82.) Ol. a. 0. @. 238. 



" (@. 82.) Äreil, Ginftu^ beö SÄonbeö auf bte 

 magnctifcbe 35ecliuatto« 1852 @. 27, 29 unb 46. 



'' (@. 83.) toömo^ 93b. I. @. 407 3liim. 55 unb, auf bte 

 5:)?eteürll:eine angewanbt, @. 137; wie 93b. III. ©.594. 



** (@. 84.) asergl. ?l}?ar>) ©omeroille in il)rer furjen, 

 aber li(^tr)ollen, auf ©abine'ö QIrbeiten gegritnbeten Sarilellung 

 bc^ Grb^gjiagnetiömuö, Physical Geography Vol. II. p. 102. 

 ©ir 3ol)n JHo^, ber bie[e Surwe fd^wacfjfter ^ntenfität auf feiner 

 großen antarctifc^en Srpebitton 2)ec. 1839 burc^fc^nitt (lat. 19° 

 fübl. unb long. 31" 35' ivejll.), nnb ixxi gro^e QSerbienft l)at il)re 

 Sage in ber füblid^en .^emifptjare juerft beitimmt ju I)aben, nennt 

 fic ben Equator of less intensity. @. beffen Voy. to the Sou- 

 thern and Antarctic Regions Vol. I. p. 22. 



*' (©. 84.) »Stations of an intermediate character situated 

 beetweu the northern and southern magnetic hemispheres, par- 

 laking, although in opposite seasons, of those contrary features 

 which separately prevail (in the two hemispheres) throughout 

 the year.« ©ttbine in ben Phil. Transact. for 1847 P. I. 

 p. 53 unb 57. 



'" (©. 85.) Ser Pole of Intensity ift nidjt ber Pole of Ver- 

 licity; Phil. Transact. for 1846 P. III. p. 255. 



" C@. 85.) ®au^, allgent. 5;l)eorie beö erbmag: 

 netiömuö § 31. 



3i. ». .§umbolbt, Äo4mc«. IV. 12 



