...the fouth, whilft thofe to the north and fouth pointed directly upwards, the inference therefore wag unavoidable, that the beams were guided, not by gravity, but by the earth's magnetifm, and the difturbance of the needle that had been heretofore obferved during the time of an...

...had been done before, that the luminous beams at that time were all parallel to the dipping needle: that the beams were guided, not by gravity, but by...an aurora, seemed to put the conclusion past doubt " (pp. 147, 148). His chapter on the theory of the aurora borealis shows a greater tendency to undue...

...the south, whilst those to the north and south pointed directly upwards ; the influence was therefore unavoidable, that the beams were guided, not by gravity,...heretofore observed during the time of an aurora, seems to put the conclusion past doubt. It was, proper, however, to observe whether future appearances,...

...had been done before, that the luminous beams at that time were all parallel to the dipping needle: that the beams were guided, not by gravity, but by...an aurora, seemed to put the conclusion past doubt " (pp. 147, 148). His chapter on the theory of the aurora borealis shows a greater tendency to undue...

...recollected at the same time that former appearances had been similar to the present in this respect, and that the beams to the east and west had always appeared...has been found invariably the case, as related in these observations." Then comes Dalton's somewhat daring assumption, not, however, borne out by the...