g. 21-25 | N |
|shower in 1879 | | | | | |
+---------------+--------+----------------+---------------+----------------+--------+
| | |Between Capella | After 10 | Aug. 21, 25, | |
| Epsilon |Sept. 7 | and the | P.M. | Sept. 6-8, 21, | N.E. |
| Perseids | | Pleiades | v. Sw. Sk. | Nov. 29. | |
+---------------+--------+----------------+---------------+----------------+--------+
|Alpha Arietids |Sept. 21| Near Hamal | Sl. T. | Aug. 12, Oct. 7| E. |
| | | ([a]) Arietis | | | |
+---------------+--------+----------------+---------------+----------------+--------+
|Gamma Pegasids |Sept. 22| Near and S.E. | Sl. | July 31, Aug. | E. |
| | | of Great Sq. | | 25, etc. | |
+---------------+--------+----------------+---------------+----------------+--------+
The Perseids are of a yellowish color, and move with medium velocity.
Their line of flight is from northeast to southwest. They are probably
visible for more than a month, from the latter half of July to the
last week in August.
The August meteors are known as the "Tears of St. Lawrence."
The Abbreviations under _Characteristics_ are as follows:
v.--very
Sl.--Slow
Sk.--Streak-leaving meteors.
M.--Moderately
B.--Bright
T.--Train-leaving meteors.
Sw.--Swift
F.--Faint
Sh.--Short meteors.
THE CONSTELLATIONS OF AUTUMN.
[Illustration: Map showing the principal stars visible from Lat. 40[deg]
N. at 9 o'clock, October first.]
CASSIOPEIA (kas-i-[=o]-p[=e]'-ya)--THE LADY IN THE CHAIR. (Face
North.)
LOCATION.--A line drawn from [d] Ursae Majoris, through Polaris,
strikes [a] Cassiopeiae. It is situated the same distance from Polaris
as Ursa Major, and about midway between Polaris and the zenith in the
Milky Way. Cassiopeia is characterized by a zigzag row of stars which
form a rude "W," but in mid-autumn, to an observer facing north, the
"W" appears more like an "M," and is almost overhead. Note the spot
marked 1572. This is where a very famous temporary star appeared in
that year. It was bright enough at one time to be seen in full
sunshine. The star [[^e]] is sixteen light years distant.
Caph is equidistant from the Pole, and
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