444 CONTENTS. 
EXPERIMENTAL AND THEORETICAL RESEARCHES ON THE FIGURES OF EQUILI- 
BRIUM OF A LIQUID MASS WITHDRAWN FROM THE ACTION OF GRAVITY, &c., 
by Prof. J. PLATEAU....--- -252- Rep 2 eet Gee ee pln cena eee aieneees ones 
ARTIFICIAL SHELL-DEPOSITS IN NEW JERSEY, by CHARLES RAU.------.....--. 
THE INTERMIXTURE OF RACES, by GEORGE GIBBS.----..--...-.---------.--.- 
AN ACCOUNT OF THE ABORIGINAL INHABITANTS OF THE CALIFORNIA PENIN- 
SULA, as given by JACOB BAEGERT, a German Jesuit missionary, who lived there 
. seventeen years during the second half of the last century.----.--..------.----- 
THE First STEPS IN THE STUDY OF HicH ANTIQUITY IN EuRo?PE, by A. Mortor. 
PRIZE QUESTIONS. —ExTrRacT FROM THE PROGRAMME OF THE HOLLAND 
SOCIETY OF SCIENCES AT HARLEM, FOR 1865....-...-.--...-.-..-. 
IMPERIAL SOCIETY OF NATURAL SCIENCES OF CHERBOURG. PRO- 
GRAMME OF COMPETITION FOR 1868........---..-.----<---.4--- sli 
PRIZE QUESTIONS OF THE PHYSICAL-MATHEMATICAL CLASS OF THE 
RoyaL Russian ACADEMY OF SCIENCES FOR THE YEARS 1861-’67. 
GEOLOGICAL PRIZE ANNOUNCED ON May 30, 1864, BY THE IMPERIAL 
ACADEMYAOE /SCIENCESPAT ViTEN NAS a= ooo eas oni Pe 
EXPLORATIONS.—ScIENTIFIC EXPEDITION TO MEXICO. A REPORT ADDRESSED 
TO THE EMPEROR BY THE MINISTER OF PUBLIC INSTRUCTION....- 
A JOURNEY TO THE YOUCAN, RUSSIAN AMERICA, by W. W. KirBy-. 
EXPLORATION IN UPPER CALIFORNIA IN 1860, UNDER THE AUSPICES 
OF THE SMITHSONIAN INSTITUTION, by JOHN L'EILNER, U.S. A--- 
JOURNAL OF AN EXPLORATION OF WESTERN MISSOURI IN 1854, UN- 
DER THE AUSPICES OF THE SMITHSONIAN INSTITUTION, by P. R. 
HOY, Ms Dias. 2. cccceccces cceces secaee sc cet a eepasheaaa= ch oteeee 
TABLES OF WEIGHTS AND MEASURES...-.. epepaid sce mmesewjeamtectibencotoce. 
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