Milligramme, (1,000th of a gramme).
Centigramme, (100th of a gramme)..
Décigramme, (10th of a gramme).......
Gramme, (unit of weight)..
Decagramme, (10 grammes)
Hectogramme, (100 grammes).

Kilogramme, (1,000 grammes)...

....

353.1658 cubic feet.

1,544 grains, 3.2167 oz. troy, or 3.5291 oz. avoirdupois.

32 oz. troy, or 2.2057 lbs. avoirdupois. Myriagramme, (10,000 grammes)... 321 oz. troy, or 22.057 lbs. avoirdupois.

Value of millimetres in English inches.

Millimetres. English inches. Millimetres. English inches. Millimetres. English inches.

Table for the conversion of degrees of Centigrade thermometers into those of Fahrenheit's scale.

The following table embraces the latest and most accurate equivalents, as accepted by Will, in the Jahreslericht für Chemie, for 1863:

Table of chemical equivalents of the sixty-three elements.

CONTENTS.

REPORT OF THE REGENTS.

Letter of the Secretary to Congress communicating report....
Letter of the Chancellor and Secretary submitting-report for 1864..
Officers and Regents of the Smithsonian Institution.....
Members ex officio and honorary members of the Institution....
Programme of organization.......

REPORT OF THE SECRETARY, Prof. HENRY, for 1863..
Appendix to the report of the Secretary:

Draper's telescope, by the Rev. T. W. Webb, A. M., F. R. A. S........................
Brief review of a memoir on the cretaceous reptiles of the United States,
published in the fourteenth volume of the Smithsonian Contributions to
Knowledge, by the author, Joseph Leidy, M. D.......

REPORT OF THE ASSISTANT SECRETARY, Prof. BAIRD..

Statistics of international exchange..

Donations to the museum in 1864

PAGE.

3

4

5

6

7

13

62

Donations to the library from foreign institutions during the years 1860-'4.
Donations to the library from individuals of foreign countries during the
years 1860-'4....

LIST OF METEOROLOGICAL STATIONS AND OBSERVERS OF THE SMITHSONIAN IN-
STITUTION FOR THE YEAR 1864...

101

REPORT OF THE EXECUTIVE COMMITTEE.......

111

JOURNAL OF PROCEEDINGS OF THE Board of REGENTS........

114

GENERAL APPENDIX.

Memoir of DeLAMBRE, by Joseph FOURIER..........

125

ESSAY ON THE VELOCITY OF LIGHT, by M. DELAUNAY..

135

OZONE AND ANTOZONE, by CHARLES M. WETHERILL, Ph. D., M. D...

166

VEGETATION AND THE ATMOSPHERE, by J. JAMÍN...

178

EXTRACT OF A MEMOIR ON THE PRESERVATION OF Copper and IRON IN SALT

THE PRODUCTS OF THE COMBUSTION OF GUN-COTTON AND GUNPOWDER UNDER CIRCUMSTANCES ANALOGOUS TO THOSE WHICH OCCUR IN PRACTICE, by Lieutenant VON KAROLYI....

221

DESCRIPTION OF APPARATUS FOR TESTING THE RESULTS OF PERSPIRATION AND
RESPIRATION IN THE PHYSIOLOGICAL INSTITUTE AT MUNICH, by Prof. MAX
PETTENKOFER

235

THE SOLAR ECLIPSE OF JULY 18, 1860, by Dr. J. LAMONT.

240

REPORT ON THE TRANSACTIONS OF THE SOCIETY OF PHYSICS AND NATURAL
History of GENEVA, 1861, by Rev. M. DUBY, president.........
ON THE CRANIA HELVETICA, by FREDERICK TROYON.

261

282

PAEL

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...

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 HIGH ANTIQUITY IN EUROPE, by A. MorLOT.
PRIZE QUESTIONS.-EXTRACT FROM THE PROGRAMME OF THE HOLLAND
SOCIETY OF SCIENCES AT HARLEM, FOR 1865......
IMPERIAL SOCIETY OF NATURAL SCIENCES OF CHERBOURG.
GRAMME OF COMPETITION FOR 1868.....

PRO-

# M M

404

412

PRIZE QUESTIONS OF THE PHYSICAL-MATHEMATICAL CLASS OF THE
ROYAL RUSSIAN ACADEMY OF SCIENCES FOR THE YEARS 1861-67. 410
GEOLOGICAL PRIZE ANNOUNCED ON MAY 30, 1864, BY THE IMPERIAL
ACADEMY OF SCIENCES AT VIENNA..
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 FEILNER, U. S. A......
JOURNAL OF AN EXPLORATION OF WESTERN MISSOURI IN 1854, UN-
DER THE AUSPICES OF THE SMITHSONIAN INSTITUTION, by P. R.
Hoy, M. D...................

TABLES OF WEIGHTS AND MEASURES...

416

421

431

439