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similar would have been obtained, notwithstanding the greater diminution of the sun's apparent diameter.

The spectrum obtained in Jupiter and Saturn, is the only one whose analysis is complete, as it is incapable of having its character altered by any farther diminution of the sun's diameter.

A rainbow formed in summer, when the sun's diameter is least, must have its colours more condensed, and homogeneous than in winter, when the size of his disc is a maximum, and when the upper or under limb of the sun is eclipsed,-a rainbow formed at that time will lose entirely the yellow rays, and have the green and red in perfect contact. For the same reason, a rainbow, formed in Venus, and Mercury, will be destitute of green rays, and have a brilliant bow of white light, separating two coloured arches, while in Mars, Jupiter, Saturn, and Uranus, the bow will exhibit only four homogeneous colours.

Brewster's Newton.

The moon is up, and yet it is not night

Sun-set divides the sky with her-a sea Of glory streams along the Alpine height

Of blue Friuli's mountains; heaven is free

From clouds, but of all colors seems to be
Melted to one vast Iris of the west,

Where the day joins the past eternity ;
While on the other hand, meek Dian's crest
Floats through the azure air-an island of the blest!

A single star is at her side, and reigns

With her o'er half the lovely heaven; but still Yon sunny sea heaves brightly, and remains

Rolled o'er the peak of the far Rhætian hill,

As Day and Night contending were, until Nature reclaimed her order :-gently flows

The deep-dyed Brenta, where their hues instil The odorous purple of a new-born rose, Which streams upon her stream, and glass'd within it glows.

Filld with the face of heaven, which, from afar,

Comes down upon the waters; all its hues, From the rich sunset, to the rising star,

Their magical variety diffuse.

And now they change; a paler shadow strews
Its mantle o'er the mountains; parting day

Dies like the dolphin, whom each pang imbues
With a new color, as it gasps away,
The last still loveliest, 'tis gone-and all is gray.

Childe Harold's Pilgrimage. The earth will be in aphelion at 7 in the morning of the 1st of this month. The sun enters Leo at 22 min. after 10 of the night of the 22d.

SOLAR ECLIPSE. On the 27th the sun will be eclipsed visible at Greenwich. The following are the particulars :

Hrs. Min.
Beginning of the Eclipse ...... 2 37
Greatest Obscuration

2 151
Visible Conjunction ............ 2 16 1

End of the Eclipse .............. 2 281
Digits eclipsed 0° 123 on the sun's southern limb.

The following diagram will illustrate the part of the sun's disc that will be eclipsed, and its appearance at the time of the greatest obscuration :

Vertex

Moons

"Limb

This eclipse will be remarkable for the very minute portion of it, that will be visible to the British Isles ; at Greenwich, only 1-58th part of the solar diameter will be obscured. It will be considerable to a great portion of North and South America.

The following were the observations at Deptford, of the Lunar Eclipse of 26th February last. (See T. T. Ast. Occ. February, 1831).

The moon's upper limb was indistinctly perceived at 5 hrs. 45 min. clock time, above a low bank of clouds, over which was diffused a slight blue baze. 5 hrs. 55 min. the shadow of the earth quite clear of Mare Crisium, and Mare Humorum : the eclipsed part of the disc was not visible. 6 hrs. 5 min. the shadow passed

the centre of Tycho, and the northern part of Mare Fecunditatis. 6 hrs. 10 min. the eclipsed limb dully visible, and of a neutral color; the edge of the shadow more defined than when first observed, and the penumbra, about the breadth of Mare Crisium. 6 hrs. 15 min. the shadow passed through the southern part of Mare Fecunditatis. 6 hrs. 25 min. the defined edge of the shadow left the moon; the penumbra lingered for several minutes afterwards, and exhibited a dull appearance on the western limb. A halo of unusual brilliancy surrounded the moon at 9 hrs. There will be no lunar eclipse in the present year.

LUNAR PHENOMENA. .

Phases of the Moon.
First Quarter, 4th day at 33 min. after 11 night.
Full Moon, 12th .... 55 ........ 10
Last Quarter, 20th .... 2 ........ 10

New Moon, 27th .... 55 ........ 1 afternoon. Conjunctions of the Moon with the Planets and Stars.

July 2d, with Saturn ........at 2 afternoon.

15th, .... Uranus ......... 5
18th, .... Jupiter .......... noon.
21st,..... Mars ............ 5 morning.
27th, .... Venus ........... 2 afternoon.
29th, .... Mercury ........ 5 morning.
30th, .... Saturn ..........4

PHENOMENA PLANETARUM. Mercury, in his superior conjunction with the sun at 15 min. after 8 of the morning of the 3d of this month. Greatest north latitude on the 9th. In conjunction with Regulus at 10 in the evening of the 27th, difference of latitude 15'.

. 10 42.

Venus, in her superior conjunction at 45 min, after 8 of the morning of the 27th. In perihelion on the 30th.

Phases of Venus. The following are the proportions of the light and dark phases of Venus :July 1st.-Illuminated disc = 11.907

Dark part .... = 0.093 Mars in conjunction with o in Pisces, at 8 in the morning of the 9th.

The Asteroids.

Hrs. Min. Vesta, 3d day. Right Ascension 10 15. N. Declin. 16° 29' 11th

...... 10 28.

........
...

15 10 19th

13 47 27th

10 56.

12 20 Juno, 3d

8 43 11th

7 58 19th

7 9 27th

6 18 Pallas, 3d

6 44 11th

6 27 19th

5 58 27th Ceres, 3d

4 20

2 27. ........ 4 54 19th .................... 2 36. ........ 5 22

27th . ........ .......... 2 43.
Jupiter stationary on the 17th.
Eclipses of the Satellites of Jupiter.

IMMERSIONS.
First Satellite, 7th day at 10 min. 47 sec. after 2 morning

22d ...... 27 .... 1........ midnight

30th ...... 21 .... 3........ 2 morning Second Satellite, 2d ...... 47 .... 23 ........ 1

26th ...... 54 ...... 52 ........ 10 night

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