THE

MERICAN JOURNAL

OF

SCIENCE AND ARTS.

EDITORS AND PROPRIETORS,

PROFESSORS JAMES D. DANA AND B. SILLIMAN.

ASSOCIATE EDITORS,

PROFESSORS ASA GRAY AND WOLCOTT GIBBS,

OF CAMBRIDGE,

AND

PROFESSORS H. A. NEWTON, S. W. JOHNSON,
GEO. J. BRUSH AND A. E. VERRILL,

OF NEW HAVEN.

THIRD SERIES.

VOL. I.-[WHOLE NUMBER, CI.)

Nos. 1-6.

JANUARY TO JUNE, 1871.

WITH TWO PLATES.

NEW HAVEN: EDITORS.

1871.

PRINTED BY TUTTLE, MOREHOUSE & TAYLOR, 221 STATE ST.

ERRATA.

6.

66

Page 252, Title and elsewhere, for Santa, read Santo.

line 19, for Saybo, read Seybo.

line 6 from bottom, for Macorio, read Macoris.
253, line 4, for cone, read core.
254, line 5, for

read
line 2, for Pterocardia, read Pteroceroid.
line 19, for Citao, read Cibao.
line 5 from bottom, for but were much folded, reud but nowhere

were much folded.
255, line 19, for north, read mouth.
285, line 4 from bottom, for 1900,

read 10%
294, line 14, for was, read were.

line 20, for outlines, read outliers.
lines 22 and 35, for Paraúquára, read Parauáquára.
line 27, after diorite, insert boulders.

line 28, for flanks of the serras, read flank of the serra.
295, line 22, for Para, read Pará.

line 27, for Almeyrine, read Almeyrine and Santarem.
line 28, after origin, insert deposited.
line 42, before they, insert as.
line 46, for — being, read bearing.

96

36

64

66

66

66

6.

64

CONTENTS OF VOLUME I.

a

NUMBER I.

Page.

Art. I.—On the Quaternary, or Post-tertiary, of the New

Haven Region; by JAMES D. DANA,

1

II.-On the Corona seen in total Eclipses of the Sun; by W.

A. NORTON,

5

III.--- On the Duration of Flashes of Lightning; by 0. N. Roop, 15

IV.-On the physical condition of a closed circuit contiguous

to a permanent and constant Voltaic current; or, on “the

electro-tonic state;" by ALFRED M. MAYER, --

17

V.-Abstract of the Programme for the Observation of Stars

to the Ninth Magnitude, undertaken by the German As-

tronomical Society,...

25

VI.-On Gahnite from Mine Hill, Franklin Furnace, New

Jersey; by Geo. J. BRUSH,-

28

VII.—Meteors of November 13th-14th, 1870,

30

VIII.—On some phenomena of Binocular Vision; by JOSEPH

LECONTE,--

33

IX.-Brief Contributions to Zoology from the Museum of

Yale College. No. IX.—Notice of a Fossil Insect from

the Carboniferous formation of Indiana; by S. I. SMITH,

X.—Earthquake of October 20th, in Northeastern America;

by Alex. C. TWINING,-

47

XI.—Brief Contributions to Zoology from the Museum of Yale

College. X.-Descriptions of some imperfectly known and

new Ascidians from New England; by A. E. VERRILL,--