86 Miscellaneous Intelligence. 
Ww sh man was president for fourteen ing (from 
1856 to 1870), and, like Agassiz, was a man to be ever kept in 
mind for his excelfencies by future generations of laborers in 
science. The Boston Rociet ty of Natural History owes much to 
the author of this volume for the faithful and judicious manner 
in which it has been prepared. 
2. American Association at Cincinnati.—The next meeting 
-of the American ——— for the Advancement of Science 
opens at Cincinnati on the 17th of August. Professor GEorGE J. 
Brusn, of New Haven, iy is President of the m eeting ; Pro- 
fessor A. M. Mayer of Hobo en, N. J., Vice-President of Section 
a 
and C. V. Ritey, of Washington, D. C., General Secretary. The 
Chairman ie the Subsection of Chemistr y is W. R. Nicnots, of 
oston, Mass.; of Mics roscopy, . Hervey, of Taunton, | 
0 
pea se J. G. Morris, of Baltimore, Md.—Th e headquarters 
f the Association in the city will be at Music Hall; there will 
= found the offices of the Permanent Secreta ary and Local Com- 
mittee, as well as the rooms for the sessions, and the book for 
registering the names of members on their arrival. 
e so-called Cosmical Dust.—Dr. Lasautx has investi- 
re Adee subject of the mineral dust chiar at different times has 
been collected at various points on the earth’s surface and sas 
which a cosmical origin has been assumed. The memoir by 
denskidld on this subject, noticed in this Journal, ix, 145, 1875, is 
reviewed and so he abel a gaia there reach d questioned 
n 
named by Nowdenskiotd Ra was examined micro econ 
outa of a es cae of snow collected by the author in 
ood o 
eral to 
regarded as terrestrial detritus, and that before a paadgamiee so 
origin can be considered proved in any case, a much more critical 
hag epee examination must be made than has been customary 
in the past 
