THE YOUNG SCIENTIST. 
73 
Astronomy for Amateurs. 
BY BEKIilN H. WEIGHT. 
(Calculated for the Latitude of New York City.) 
THE PliANETS— JULY, 1880. 
D. 
H. 
M. 
Mercury sets 
2 
9 
2 evening- 
5 
8 
59 " * 
Venus rises 
10 
4 
37 morning 
30 
5 
22 
3£ar8 sets 
10 
9 
21 evening 
30 
8 
33 
Jupiter rises 
10 
11 
30 
30 
10 
U 
Saturn " 
10 
11 
59 
a <( 
30 
10 
43 
Uranus sets 
20 
9 
14 
Neptune rises 
20 
11 
59 
EPHEMEEIDES 
OF THE PKINCIPAL. 
STARS AND 
CL.USTEES FOB, JULY 21, 1880, 
//. 
M. 
J.Zp/ia Andromeda (Alpheratz) rises 
8 
10 even 
Omicron Ceti (Mira) variable " 
0 
28 morn 
Beta Persei (Algol) 
9 
50 even 
Eta Tauri (Alcyone or Light of 
Pleiades) rises 
0 
14 morn 
Alpha Tauri (Aldebaran) rises 
1 
33 " 
J.Zp/ia Aurigae I Capella) " 
10 
46 even 
Beta Orionis (Rigel) rises 
3 
40 morn 
Alpha Orionis (Betelguese) rises 
3 
25 " 
Alpha Canis Majoris (Sirius or Dog 
Star) in- 
visible. 
Alpha Canis Minoris (Procyon) rises 
5 
15 morn 
Alpha Leonis (Regulus) sets 
8 
45 even 
Alpha Virginis (Spica) sets 
10 
41 " 
Alpha Bootis ( Arcturus) sets 
1 
25 morn 
Alpha Scorpionis ( Antares) in merid 
8 
21 even 
Alpha Lyrae (Vega) in merid. 
10 
32 " 
Alpha Aquillae (Altair) in merid. 
11 
44 " 
Alpha Cygni (Deneb) in merid. 
0 
40 morn 
Alpha Pisces Australis (Fomalhaut) 
rises 
10 
50 even 
NEAE APPEOACH OF MOON TO PLANETS AND 
STAES, AND OTHEE PHENOMENA. 
July 1. Saturn 8° South of Moon. 
" 2. Uranus 6^ 
" 3. Moon midway between Pleiades and 
Hyades. 
" 3. Earth furthest from Sun. 
" 4. Venus 9^ in Gemini. 
" 4. Moon Perigee : Tide Highest. 
*Mereury will set on the 5th, Ih. 26m. after the 
Sua, near the close of evening twilight and at a 
point 23° 47' north of the west point, and 6° 53' 
north of the sunset point. He will appear much 
as a first magnitude star ; as Antares. He is near 
the middle of the constellation Cancer, and there 
are no stars in his vicinity bright enough to be 
mistaken for him. 
July 4. Moon Highest. 
" 3-6. Mercury brightest, being at greatest 
eastern elongation ; 26° 19'. An even- 
ing star. 
" 6. Mercury at descending node. 
" 7. Moon about 5° South of Castor and 
Pollux. 
" 7. Venus very close to the moon, being 
only about one deg:ree north. 
" 7. Eclipse of the Sun ; Annular, invisible 
in North America. Visible princi- 
pally South of the Equator in South 
America and Atlantic Ocean. 
" 9. Mercury 3^ North of Moon. 
" 9. Jupiter 90° West of the Sun ; quadrature 
" 10. Moon 3° North of Regulus. 
" 10. Mars 5° North of Moon. 
" 11. Mars 26" in Cancer. 
" 11. Uranus 6° 
" 14. Moon 2° South of Spica Virginis. 
" 14, Venus, Superior Conj. with Sun. 
" 18. Jupiter 19^ in Pisces. 
" 18. Moon Lowest. 
" 18. Moon 2° North of Antares. 
" 19. Moon in East Branch of Milky Way. 
" 20. Moon Apogee— tide lowest. 
" 20. Saturn 90° West of Sun ; quadrature. 
" 24. Venus in Perihelion. 
25. Saturn 27° in Pisces. 
" 26. Uranus 10° in Leo. 
" 27. Jupiter 6° South of Moon. 
" 28. Saturn 8° 
" 29. Uranus 6^ " " 
THE MOON, III. 
Mount Taurus (51) is a lofty range of high 
mountains, in which is the terraced crater,, 
Eoemer (52), which is 26 miles in diameter, and 
11,600 feet deep. 
About six days after New Moon, Posidonius 
(54) makes a good ob,iect. This is a walled plain 
62 miles across, including several small objects, 
in which changes have been observed by several 
astronomers. Mount ArgcBus (58) is a small 
range rising towards the East to a summit up- 
wards of 12,000 feet high. It is remarkable for 
the spire of shade which it casts across the plain 
at sunrise. It requires close watching, as the 
shadow rapidly looses its slender point. It is 
best seen 4d. 21h. after New Moon. Macrobius 
(59) is an isolated crater, nearly 13,000 feet deep, 
and north of it is Proclus (60), whose ring is one 
of the most luminous portions of the Moon ; best 
seen a few days after Full Moon. Plimus(61) 
is a terraced ring 32 miles broad, and filled with 
hillocks. 
Menelaus (70) is the common radiant of several 
bright streaks. This is a steep crater 6,600 feet 
deep, and was declared an active volcano by the 
elder Herschel, but this was refuted by other 
