Books Received, 155 
of the fortifications of Dresden. The Glades are nearly at the height 
of land of that part of Virginia, probably not less than 2500 feet above 
t 
; sea. It is certain tha reat number of places within a radius 
of 125 miles from Stone Bridge, where the Bull Run cannonading 
rred, the so was not heard—and it seems probable that its 
is well known from the ex xperience of aeronauts that sounds are hea 
with much greater ne Jrom the earth to a balloon than on the 
earth from t the balloo _ In deep vallies woth may be cut off by reflec- 
mo 
nd heard on eminences at greater distances. We ask our corres- 
Pondents residing within the radius here named to send us their experi- 
oy on this oe —Ebs 
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critical knowledge in paleontology, bas joined the California + Glediaid 
utvey in the capaci ity of Ba pati We learn by private letters 
Op. edal and Royal Medals awarded.—Prof. Acassiz is the re- 
cipient for the year 1861 of the Copley Medal, in the gift of the Royal So- 
ciety of Lon ndon, in consideration of his scientific investigations generally, 
/ One of the Royal Medals has been awarded to Dr. Carpenter for his 
: "searches on the Foraminifera and other works oa Physiology and Com- 
: Parative Anatom my. 
The third medal was awarded to Prof. J. J. aber of Woolwich, 
ia Important contributions to Mathematical Science 
5. Prof. August De LaRive, of Geneva, has sent us a comsideaneatials 
reining the explanaiion of the oe origin of the Aurora, given 
lish B. V. Marsh, in our No. for May last. We had proposed to pub- 
Prof. De Lakive's letter in this number but it is unavoidably post- 
‘ Poned to our 
6. Sidiect.. iN Wituram Purers Buaxe and Mr. Rarwart Pom- 
PELLY, ey have been commissioned by the Japanese s beele estes to 
ni to Japan and make an exploration into roo economic geology an 
ri Pee of that kingdom of which w Xs ow almost 
for 
Vi ees RECEIVED. 
em Report of the Board of Re of the Smrrssontan Instrrvtioy, show- 
8, operations, aa agg _ conto of the jostitution for sage «br , Pp. 
on, 
U.S. Senate Doc, N Bowman, Printer, Was 
Py Smithsonian Contribution . Kae Be: , vol. xii, contains— Art. L get Aa 
MD, y on — ene ical Observations i = the Arctic Seas ; by Exisna Kent Kang, 
Fran dein the second Grinnell Expedition in search of Sir er 
mi in rewaes ter Reduced and ore os 0 inne 9 mn —e 
- ions 
i 8 Ola hall oma et On ne YF. Make 
logical WaittLesry. eteoro- 
Carritinnr ain made at Providence, xT (st pee tole olen May, 1860); by 
