378 THE YOUNG SCIENTIST. 
and a host of other interesting objects ; in the 
next, Jupiter and Praesepe; and in Leo, Mars 
Eegulus and the Sickle. South of the zodiac^ 
is a still more brilliant field. Low down in the 
south the two brilliants, Phaet in the Dove, on 
the right, and Naos in the Ship on the left, 30'^ 
apart, form the southern termini of the legs of 
the Great Egyptian X, having the great Sun, 
Sirius as its centre, and Procyon in the Lesser 
Dog, and Betelguese in Orion as the northern 
termini thus : 
To the right of Sirius is the Hare, indicated 
by a neat four-sided figure, and above it is 
Eigel. The Trapezium and the Kings or " Stars 
of Orion's Belt," and Leo and the Sickle, are 
rising. 
To the west or right of the meridian An- 
dromeda, just N.E. of the Great Square of 
Pegasus, and the A in Aquarius. S.W. of it are 
the most conspicuous objects. Away in the 
N. W. we see the Great Cross, with Deneb at its 
head, and lying in the Milky Way; and the 
Harp and Vega, two most beautiful objects. 
In the circumpolar regions, the Great Dip- 
per, in Ursa Major, is low down and a little to 
the East. The Little Dipper, Draco and Cas- 
siopeia, are to the left or west of the pole, and 
the Segment of Perseus, Auriga and Capella, 
are to the right. 
EPHEMERIDES OP THE PRINCIPAL STARS AND CLUS- 
TERS, DECEMBER 21ST, 1883. 
M. 
M. 
Alpha Andromeda (Alpheratz) 
in merid 
6 
2 eve. 
Omicron Ceti (Mira) variable, 
8 
13 " 
Beta Persei (Algol) 
U 
9 
0 " 
Ma Tauri ("Seven Stars" or 
Pleiades) 
9 
40 " 
Alpha Tauri (Aldebaran) 
u 
10 
28 " 
Alpha Aurigse (Capella) 
u 
11 
7 
Beta Orionis (Eigel) 
u 
11 
8 " 
Alpha Orionis (Betelguese) 
11 
48 " 
Alpha Canis Majoris (Sirius or 
" Dog Star") rises 
7 
39 
Alpha Canis Minoris (Procyon) rises 
7 
14 " 
H. M. 
Alpha Leonis (Regulus) " 9 17 eve. 
^Zp/ia Yirginis (Spica) " 158mor. 
Alpha Bootis (Arcturus) " 11" 
Alpha Scorpionis (Antares) invisible 
Alpha Lyras (Vega) sets 9 26 eve. 
Alpha Aquillse (Altair) sets 8 14 '" 
^Z^/ia Cygni (Deneb) " 0 36mor. 
Alpha Pisces Australis (Fomalhaut) sets 8 50 eve. 
De Land, Florida. 
Novelties for Amateurs. 
A number of excellent devices were on exhibi- 
tion at the American Institute Fair this year, suita- 
ble for amateurs and amateur work. Among 
which we may mention. (1) The Economic Mo- 
tor, manufactured by the Economic Motor Co., 28 
Beekman Street, New York. This is a first class 
motor for amateurs using lathes, scroll saws, or 
ether machines requiring power from one-half 
man to four men, and as the cost is only from 
$75 to $175, the jnotors may be considered cheap. 
The power is derived from the rapid ignition In 
the cylinder of a combustible mixture of illuminat- 
ing or heating gas and air, which enters the cyhn- 
der through automatic valves. When the amount 
necessary to propel the piston has been drawn in, 
ignition takes place, and the piston is forced up- 
ward to the top of the cyhnder, imparting a rotary 
motion to the crank-shaft and fly-wheel. The mo- 
mentum of the latter completes the revolution, 
driving out the product of combustion through an 
exhaust valve, when the gas and air enter again 
and the operation is repeated. 
(2) Another useful machine for amateurs— or 
professionals, for that matter— is the adjustable 
mitre-planing machine, exhibited by Theodor 
Schreppel & Co., of 101 Bowery, New York. 
This is simply a mitering machine worked with 
a lever and rack, and is a decided improvement 
over the old style mitering machines. The facil- 
ity with which it is worked does away with the 
necessity of having the attendance of two men to 
turn out good work, the employment of the lever 
and rack enabling even a boy to use both cutters 
without changing his position or using extraor- 
dinary exertions, and therefore twice as much 
work can be easily performed by a boy or un- 
skilled mechanic with this machine than could 
have been performed by two skilled men with the 
old fashioned machines. The machine being en- 
tirely constructed of metal, the changes of the 
temperatiu-e and atmosphere have no eflfect upon 
the same. 
(3) Of scroll saws there were quite a number, 
among which may be mentioned the Challenge 
and Rival, manufactured by the Seneca Manu- 
facturing Co., and Barnes & Co., of Rockford, 111. 
The Seneca Manufacturing Co. have also in 
