Astronomy. 153 
than moonlight, turning gradually red and then vanishing 
i d, a report as if a large piece of 
artillery had been fired in the immediate neighborhood shook the 
house, and reverberated for some seconds in the surrounding moun- 
tains. 
The cause of these phenomena seems to have been, from descrip- 
tions of those who observed it plainly, a large luminous body of 
conical shape, going with great velocity point foremost and draw- , 
ing after it a long fiery train. It was observed from all parts o 
the island; observers on the north side reporting it as rising out 
of the sea and vanishing behind the peak; those on the south saw 
it vanish apparently below the southern horizon some minutes be- 
marvelous reports made. e above, however, seems reliable, 
PHAN, 
Monthly Notices Astron. Soc., May 9.)— 
May 1 at 13" 17™ 248 mean time at Marseilles; New Observatory. 
R.A. 16" 377 5159 N.P.D. 108° 11' 52’"°3. 
The correction for parallax is not applied. 
Mean position of Comparison Star, Weisse’s 738 H, XVI, for 1873:0. 
R.A. 16" 39" 39°59 N.P.D. 103° 6’19'-2 Lal.1. Bessel 2. 
The comet was still very faint, though somewhat less so than on 
April 3. 
4, 
arriving at a knowledge of high temperatures under eight different 
processes. The following table gives the names of the physicists 
who have especially employed each process, together with the 
-) Guyton and Daniell, Prinsep, &c.—Expansion of Solids 
and Gases.’ 
(2.) Draper.—Refrangibility of Light. 
(3.) Clement and Desormes, Deville—Specific Heat. 
(4.) Beequerel, Seamens.—Thermo-Electricity and Electric Con- 
ductivity, 
(5.) Bunsen, Zollner.—Explosive Power of Gases. 
(6.) Newton, Waterston, Ericsson, Secchi—Radiation. 
tat Thomson, Helmholtz.—Mechanical Equivalent of Heat. 
8.) Deville, Debray.—Dissociation. 
