HOW TO FIND THE CONSTELLATIONS. 
125 
ern tributary of the St. Francis, which also joins it by a succes¬ 
sion of small falls, large enough, howeyer, to furnish excellent 
water power for the pulp and paper industries which gave rise to 
the flourishing town of Windsor Mills. The numerous smaller 
mills throughout the country, which mark the earliest points of 
settlement, are most frequently situated on east and west run¬ 
ning streams. ” 
How to Find the Constellations. VII. 
BY GEORGE I. HOPKINS. 
A survey of the northern sky on the first evening of the twen. 
tieth century at eight o’clock discloses Ursa Minor immediately 
beneath the pole star in such a position that its brightest star 
Alpha is exactly on the meridian. Lyra, as shown by the bril¬ 
liant twinkler Vega, is nearly to its setting in the northwest, 
while near by appears the large cross, erect, in Cygnus. Over 
in the northeast Ursa Major is seen while Auriga, located by 
its brightest star Capella, is well up toward the zenith. Between 
Ursa Major and Auriga is a region of faint stars a few of which 
next to the Dipper belong to Ursa Major, while the rest consti- 
sute the constellation Lynx. As there are no stars brighter than 
the third magnitude in this constellation, and only three of these, 
it presents no prominent group by which it may be recognised, 
consequently the only guide to its location is its position with 
reference to other groups. It contains in all forty-four stars. 
If the observer will now direct his gaze to the zenith he will 
see two stars about ten degrees apart, of about the second mag¬ 
nitude, both very near the meridian. The lower one is in about 
the centre of a line of stars forming a curve which lies in the 
Milky Way and extends in the same general direction. This is 
the distinguishing group of the constellation Perseus. The star 
nearest the zenith, within about three degrees, is Beta Persei, 
and is named Algol. It is one of the most noted of the variable 
stars, being of the second magnitude most of the time. Then 
at regular intervals its brightness diminishes in about four hours 
until it is as faint as the fourth magnitude, at which it remains 
