De apparilionibus nurorœ borealis. 



375 



Non inirnhiiimr, si cnulam hanc comparalionem exainlnanli 

 oiiretur su?>|)icio, divcrsam a ratioiie noslii sevl fuisse indolem ap- 

 paiiiiDimni ;niiora} borealis incciio sœcnli proxinie prjrlerlapsi ob- 

 servatarum. Hanc rem niientiiis exquisiturl, seiiein observatiouum 

 Abocnsium & [lelsingforsensiuni in duas dispescinnis classes, unara 

 (I) annorimi 1748 — 1787, aiieram (II) annornm 1788 — 1843, ido- 

 neo deliide (leierniinantes calculo cpiales utraqiie anniias osienderet 

 périodes; iS: sic (jiiideiii iiiiioiint, iiitidisse appaiiiKUinni 



(seiiei I in dies 27 Febr. & 12 Üclobr. i 



maxima ^ } 



( ... II ... . 5 Martii ?i 8 Oclobr. ) 



(sériel I in dies 23 Jiiiiil & 1 8 Decembr. k 



minima , ; 



• • . . II . . . . 24 Junll & 22 Decembr. I 



([uod qnulern proxunc adco tum lauuiie (otius sériel oLscrvatiouua* 



