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to that of low Aurore Boreales. We could not believe that 
it was crepuscular, as it was too early, nor that it was of the 
nature of what are commonly called the ‘* Northern Lights.” 
We watched it for a considerable time, during which it ap- 
peared to vary in brilliancy. However, it branched out to 
Regulus, and also towards Coma Berenicis, the edge of low 
fog, towards the south, being also illuminated. It faded first 
in the branch towards Coma Berenicis; and, lastly, under the 
advancing twilight, in that towards Regulus. Gamma Virginis 
was in the axis, near the horizon, and Kappa Crateris on 
the azimuthal limits towards the south. From east, through 
the north to west, stars were visible to the horizon, which 
but very seldom is the case here. A considerable number of 
shooting stars were streaming about this morning. Having 
little doubt that the branch of elliptic light which extended 
towards Regulus was the zodiacal light, although I had ne- 
ver before seen it in the morning (and, indeed, in Italy alone 
in the evenings of the months of March and April), I re- 
solved to look out again for it. The weather was unpropi- 
tious until the morning of the 10th, when it was seen from 
the observatory, at ten minutes before four o’clock, and for 
some time afterwards, by my assistant, Mr. Magrath. I saw 
it from my house at a few minutes before five o'clock, when 
it shewed, with very tolerable definition, the elliptic outline 
which I have so often remarked in Italy in the spring 
evenings. ‘There was no trace, on this occasion, of a branch 
of light towards Coma Berenicis. In less than a quarter of 
an hour it was almost entirely lost behind a rising fog, 
which left a sharp white frost upon the ground. The re- 
markable features of the phenomena we witnessed seem to 
be these, viz., lst, that on the morning of the 4th there 
was a second branch of light, and also an illuminated edge 
to the fog in horizon; neither of which were visible on the 
morning of the 10th, nor have I ever previously observed 
any thing similar to accompany the evening exhibitions of 
