THE TOUIJO SCIENTIST. 
93 
June aO— Oh. 14m. morning. 
July 5~llh. 51m. evening. 
37m., north declination 36° 43'. By referring to 
a chart of the heavens, it will be seen to be one- 
VABIABIiES. 
Pcviod in 
CJJi CtlXQ^ of 
Date. 
Star's Name. 
B. A. 
Declination. 
Days. 
Magnitude. Phase. 
June 1. 
S Virginis. 
13h. 26m. 
6^ 31' — 
380.11 
0 to 11 minimum 
" 3. 
R Hydrae. 
13h. 23m. 
22° 47' — 
449.5 
4 to 10 minimum 
" 5. 
ZJHerculis. 
16h. 20m. 
19° 11" + 

7 to 13 minimum 
" 7. 
S Vulpeculae. 
19h. 43m. 
26° 59' + 
7 to 10 maximum 
" 13. 
yUrsa Majoris. 
12h. 30m. 
60° 13' + 
257 
6.7 to 13 minimum 
" 14. 
T Aquarii. 
20h. 40m. 
5° 50' — 
197 
7.8 to 0 minimum 
" 22. 
R Vulpeculae. 
20h. 59m. 
23° 18' + 
147 
8 to 13.5 maximum 
" 24. 
R Persei. 
3h. 22m. 
35° 13' + 
9 to 13 maximum 
" 26. 
R Leonis Mino" 
9h. 41m. 
12° 2' + 
312.57 
5 to 11.5 maximum 
" 29. 
>S Leonis. 
> llh. 4m. 
9° 10' + 
192 
9 to 13 maximum 
" 30. 
R Virginis. 
12h. 32m. 
7° 43' + 
146 
6.5 to 11 maximum 
EPHEMERIDES OF THE PKINCIPALi STARS AND 
CLUSTERS FOR MAY 20, 1879. 
H. 
Alpha Andromedae ( Alpheratz) rises 10 
Beta Persei (Algol) rises 
Eta Tauri (Pleiades) rise 
Alpha Tauri (Aldebaran) rises 
Alpha Aurigae (Capella) rises 
Beta Orionis (Eigel) 
Alpha Orionis (Betelguese) 
Alpha Canis Majoris (Sirius) 
Alpha Canis Minoris (Procyon) 
Alpha Leonis (Regulus) sets 
Alpha Virginis (Spica) sets 
Alpha Bootes (Arcturus) in merid 8 
Alpha Scorpionis ( Antares i in merid 10 
Alpha Lyrae (Vega) in merid 0 
Alpha Aquilla , Altair) in merid 1 
Alpha Cygni (Deneb) in merid 2 
A/p/ia Pisces Australis (Formalhaut) 
rises 0 
M. 
15 even 
11 55 " 
2 19 morn 
3 38 " 
2 6" 
invisible, 
invisible, 
invisible, 
invisible. 
10 50 even 
0 50 morn 
8 15 even 
26 " 
41 morn 
53 " 
45 " 
59 
EPHEMERIDES OF VARIABLE STARS, JUNE, 1879. 
S Canghi.— Minimum — June 15, 8h. 51m. even- 
ing, setting at lOh. 5m. evening. 
Delta LiBR^. — Minima: 
June 5— Ih. 50m. morning. 
" 12 -Ih. 24m. 
19— Oh. 59m. 
" 26— Oh. 33m. 
This star sets, June 18, about 2h. 25m. morn. 
U ConoNAE.— Minima: 
June 9— 4h. 58m. morning. 
" 16— 2h. 41m. morning, setting at 5h. 31m. 
morning. 
" 23— Oh. 24m. morning. 
" 29— lOh. 8m. evening. 
The Great Nebula in Hjrcules.— This 
Nebula is known as 13 Messier ; also as Halley's 
Nebula, having been discovered by Halley in 
1714. It is situated in Right Ascension 16h. 
third of the way from Eta to Zeta; the two 
stars which constitute the west side of the 
quadrilateral in Hercules, situated on a line 
from Vega to the Northern Crown, and midway 
between them. 
This nebula is visible to the naked eye more 
easily than the Great Nebula of Orion, de- 
scribed some time since. It is resolvable, and 
one of the most attractive objects of this class 
in the heavens. " Perhaps no one ever saw it 
for the first time without uttering a shout of 
wonder." Only the most powerful telescopes 
will entirely resolve this nebula, but a good 
three-inch glass will resolve the streamers, of 
which there are six projecting from either side. 
Hercules is near the meridian at 9 o'clock in 
the evening, in June. 
Penn Yan, N. Y. 
BOOK NOTICES. 
Plain Directions for the Construction and 
Erection of Lig-htning- Rods. By John 
Phin, editor of the Younj? Scientist," and the 
" American Journal of Microscopy," Third 
Edition, Enlarged and fully Illustrated. Cloth, 
30 cents. New York; Industrial Publication 
Company. 
The season is now approaching when the voice 
of the lightning rod man will be heard in the 
land, and thousands of dollars will be spent in put- 
cingup rods, three-fourths of which will probably 
be useless, for it is an unfortunate fact that the 
average peddler of lightning rods thinks more of 
the money that he gets than of the protection 
which he furnishes. Indeed, so common is it for 
lightning rods to be defective, that many persons 
have been led to entirely doubt their efficiency, 
and yet, no fact is more thoroughly established 
than that a good lightning rod affords perfect 
protection. 
The work before us is the only one within our 
knowledge that has not been published for the 
