78 Scientific Intelligence. 
and then see whether they also exhibit periodicities (apparent or 
real) having virtually the same times as those of sun-spots, the 
phases of the two sets = “4 3 waves being likewise allied to one 
another in a constant manner, 
It is such a comparison rem the authors have made, their 
method of analysis being one which enables them to detect the 
1844 to 1879 inclusive, and Kew temperature-range observations 
extending from 1856 to 1879 bite The following conclu- 
sions were obtained from this comparis 
(1) Sun-spot sil bit around 24 tad 26 meh whether ap- 
parent or real, to have periods very nearly the same as 
those of tecredtcad fisted? ogical Inequalities as exhibited by bie 
daily pa ir bl slant es at Toronto and at K 
(2) While the sun-spots and the Kew temperature-range is 
equalities present evidence of a single oscillation, the correspond- 
(3) Settitig the ‘celestial and terrestrial members of each indi- 
vidual Inequality, so as to start together from the same absolute 
time, it is found that the solar maximum occurs about 8 or 9 days 
after one of the Toronto maxima, and the Kew temperature-range 
maximum about 7 days after the same Toronto maximum. 
(4) The ABA ect oscillation exhibited by the temperature- 
range Inequalities is much less than the proportional oscillation 
ee Noles we the sor eeponnding solar Inequalities.— Proc. Roy. 
o 
2," Astronomical Observations and Researches made at Dun- 
th 
details of his measurements are given. on four stars, how- 
ever, Dr. Ball has made elaborate measurements and obtained 
these bape ent 
‘ Cygni, m = 0°-4676. 
Groombridge, 1618, m == 0""322. 
P. Ill, 242, or = 0"-045. 
6 Cygni, m= 0"-482 
The “parallax - 61 Cygni differs little oes that Rabo by 
Professor Hall at Washington, Professor Hall’s result being 
0’-4783. The mean parallaxes of this double star oheaiad by 
Struve, Auwers, Hall and Ball indicate that the true value cannot 
differ much from one-half a second. The small negative parallax 
