APPENDIX NO. IX. 
399 
disappeared behind the moon’s limb; at the emersion the time is given 
when the last point of the ring parted from the moon’s limb. 
2. Occultation of Saturn, January 7-8, 1854. 
Total immersion...17h. 27m. 55*0s.—A. S. 
“ emersion. 18 24 31*5 —A. S. 
The immersion is doubtful, Saturn perhaps obscured by a cloud. 
For the points of contact, see note above. 
3. Occultation of Saturn, February 4-5, 1854. 
Immersion: moment of total disappearance. 
r 23h. 42m. 14-Cs.—A. S. 
1 16-3 —E. K.K. 
Emersion, (February 5:) Saturn’s centre. o 40 13*1 —A. S. 
Last contact of ring. 40 34*3 —E. K. K. 
The moon’s limb was much undulating. The temperature at im¬ 
mersion was —56°, and at emersion —55°. 
4. Occultation of Mars, February 13, 1854. 
Immersion: first contact.201i. 21m. 4S*4s.—A.S. 
u total disappearance. 
. 22 
50-9 
—A. 
S. 
«. u n 
. 22 
37*5 
—E. 
K. 
It. 
Emersion: total reappearance.. 
54*9 
—A. 
S. 
The emersion is uncertain. 
5. Eclipse of the Sun, 
May 15, 1855. 
Time of beginning. 
—A. 
S. 
41 
—E. 
K. 
K. 
u ending.. 
44 
—E. 
K. 
K. 
52 
—A. 
S. 
Altitude of sun at beginning. 
10 ° 17' 
* 
“ “ end.... 8 
The time was obtained by means of corresponding altitudes of the 
sun; while for the occultations the chronometer’s error and rate was 
determined by means of an eighteen-inch transit-instrument mounted 
in a small observatory built of ice. The phenomena were observed by 
means of two thirty-inch telescopes. 
August Sontag. 
