CONTENTS OF VOLUME XXIII 
NUMBER CXXXIIL 
Page 
rT, L—Contributions to Meteorology: Mean annual Rain- : 
fall for different countries of the globe; by Ex1as caer 
weitp © late I (Map), .--..2.-- 25222 eutaceac rs 1 
TI.—Post-Glacial joints; by G. K. Grupert, -------- ----- 25 
IH.—Sound-Shadows in water; by Joun LeConra, ......<- 27 
IV.—The Connection between the Cretaceous iia the recent 
Eehinid Faune; by A. Agassi, . 22. c2s0 betes ous 40 
V.—Apparatus for determining without pain to the patient 
the position of a projectile of lead or other metai in the 
human body; by A. pi ids eer ea kee oar 46 
. Bur 
VII. —Clasaifiontion « of she Dinosauria; by O. C. Marsn,--- 81 
VI.—Observations of the transit of Mercury, 1881, Novem- 
Ss. 
cae 7, at saad cpm California; by E. 8. HotpEN 
SCIENTIFIC INTELLIGENCE. 
Physics and Chemistry.—Lunar Disturbance of Gravity, G. H. DARWIN and H. 
5 
ate 
A 
GH, 51.—Edison’s Hlectrical ‘Mote 2.—Carbo 
etre H. Tornog, . Rien of the oxides of Nitrogen on glass at a high 
temperature, T. M. Mor 
Geology and ~ ae ka pou Es elauar of Glaciers, F. A. ForE 
are 
— i Glaciers: Soileap-M R. W. Copprvcer, 59.—Eva 
city as petiaors in Glacial eeeg E. Hit, 61. Sadare a 
Natural ‘History Survey of Minnesota for 1880, N. H. Wren, 62.— Joints 
cite of Colorado, J. 8. NEWBERRY, eee eee region in Northern 
angie and the Indian Territory, J. ‘H. Furman: The mygdaloid of Brighton, 
3h nhs Seat el 
‘ Paige alogical Notes, E. CLAASSEN, 67.— = 
Analysis of the Emerald-green Spodumene from North Carolina, F. A. GENTH: — 
New Mineralogical Works, G. Packwineie: 68 
2 “ome and Zoology. SP ierimtags of the igen 69.—Repertorium Annuum Litera- 
tx Botanic Periodice, G. C. W. BOHNENZIEG: Fahitach = Poe oe 
cc hen Gacein und des Botanischen gree zu Berlin, A. W. EICHLER, 
mei} Moe 
GASSIZ, 75. —Geographical Distribution of certain fresh- ee 
hay r ceiaapaer f North America, A. G. WETHERBY, 76 ae 
ST there of Comet VII, Boss: esq laearagt : Morrison Observatory, 
_ctomond Mo., J. R. EastMan and H. 8, PRIvcHET?, a 
Miscellaneous Scienti telligence.— Annual Report rt of oe Chief — Officer of 
; ifie Tn 
the Army to the 5 Hocetany of the War for the year 1881, 78.— nal Acad- 
emy of Science, Noy., 1881, 79,— Obituary.—Mr, Robert Mallet, TES. M0. e 
