= 
Astronomy and Meteorology. 413 
bea Authority. Brightness. 
Riccioli. wir 
ee Nov. 5, sabe 
1823, May 28, Lohrman TO+ 
1831, Dee. 12, 13, — 7 ‘ater, 60 
1858, Feb. 22, 5-0 
1865, Oct. 4, 50 
Rutherfurd, 60 
~ 1866, Nov. 18, Buckingham, = 
The last four determinations of brightness are from photographs. Th 
1s some uncertainty in determining this i Schroter, 
in plate rx of his Selenophotographische F) penne gives a large dark 
sp the place Linné; he ebb informs me that 
“Linné” is not to be found on Russell’s globe or maps, 1797, from which 
it may ie inferred that the crater has previously been obseured. 
The following measures were made during the last lunation: 
— Dionysius. Linné. Mag. Miles. Brightness. 
Q 
Dec. 18 - 1470 11°61 0-79 10°9 4 
18 14:13 7-04 0°50 6-9 5S 
19 13-95 = mee 7-2 
21 13°32 7-0 
Th ers in column 4 ads “ Mag. ” are obtained by dividing 
the shies of “Linné” by the measures of the standard spot “ Dio- 
nysius.” The normal magnitude of “ Linné” is 0-40 i Dionysius” being 
2. Shooting Stars seen nes Colorado. ee, Denys ag vies the fol- 
Nov. 14th, 1866. The tuesabuk of observers is not state 
At 12h 9m, : meteors. eer At 1h 25m, - meteors. At Sn 80m, . meteors. 
12:20 vi 
. is 10 =« 
“ 
12 30 T . : 30 ia “ 
2 45 ii - —— 
oO ee . Total in 6 in65m,101 “ 
Hon, 1. Secretary of the Rass, Washington, 1866.—This important volume 
contains the following tables: (1.) Observations with the Meridian Tran- 
sit Instrument; (2 ’ ib. with the Mural Circle; (3.) ib, with the Equa- 
torial; (4.) Mean right ascensions, for 1860-0 of stars observed with the 
Transit ; (5.) Mean declination, obs. wi ith the Mural Circle; (6.) Bight 
ascensions, ic Heoreaont and semi-diameters of the Sun, Moou, and Plan- 
ets; (7.) Constants 9 the reduction of fixed stars; (8.) Opes of 
stars observed in 1864; (9.) Meteorological observations. 
Am. Jour. Sct.—Szconp Szrigs, Vou. XLIIT, No. 129.—Mar, 1867. 
53 
