898 Miscellaneous L intelligence. 
‘ 
personal equation had inadvertently been mkt = to the longitude 
results, with the wrong algebraic sign. The following longitude 
results are therefore printe 
Difference of | Personal Corrected Probable 
Stations. longitude. equation. difference of errors. 
a longitude 
8. h. m. 8. 
Camb. to Omaha, 1 39 15°159 —'130 1 89 15°029' £008 
“ to Salt Lake, 2 43 4°257 -— ‘110° 2 43 4147 +008 
Omahato “ 1 3 49°081 +°020 1 3 497101 +008 
Camb. toS.Fr’ nCisCo, 3 a5 7260 +070 .3 25 7330 +007 
Omaha to 1 45 52°094 +200 1 45 52:294 +010 
Salt Lake to “ 0 42 3°:024 +°180 0 42 3°204 +008 
9. A Contorted Halo ; by H. W. Parker. atcapey es 
A aa ear prismatic ‘effect in a cloud, was visible at Amhe 
Mass., 11 , March Ist. A large, white sheet of Pees ; 
at its ‘dosibly lobed end near the sun, exhibited bright spectrum — 
colors in bands of very irregular breadth, several times repo 
and flexed in zig-zag curves, accordant with the structure : 
outline of the mass. The beautiful iridescence covered nearlya — 
third of the cloud, and the bands were bent far back on them 
selves, some of them even twice, with nothing of the figure of cir - 
ar . Os. : 
. Logan Chair of Geology in W Gill University, Montreal— : | 
Sir William E, Logan has recently given $18,000, in addition to the — | 
sum of $2,000 before contributed by him, toward endowing the o 
chair of geology in M’Gill College. Princ cipal Daves under ah 
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orth are not yet perfected, will be announced in the next number | 
of this Journal. x 
British Association.—The next meeting of this Association, a 
ee gy Sata tet nd, will be held at Brighton, and will co ommenc? 
Wednesday, poe ‘14th of August. Dr. Wm. B. Carpenter is pres a 
dent for the yea ian | 
13. Annual Reaties of the Board of Regents of the Smith a 
Institution Jor 1870. 494 pp. 8vo. Washington, 1871.— Th 
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dentition of Helix turbiniformis, by T. Bland and W. pee? Binneys 
on the Ascidea Manhattensis and Mammaria Manhattens's, 
