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PROCEEDINGS

OF

THE AMERICAN ASSOCIATION

FOR THE

ADVANCEMENT OF SCIENCE,

TWENTY-NINTH MEETING,

HELD AT

Boston, Mass.,

AUGUST, 1880.

SALEM :

PUBLISHED BY THE PERMANENT SECRETARY.

1881.

LIBRARY
UNIVERSITY OF CALIFORNIA

EDITED BY

FREDERICK W. PUTNAM,

Permanent Secretary.

PRINTED AT

THE SALEM PRESS,

SALEM, MASS.

Address of JOAN M. ORDWAY, Chairman

Laws governing the Decomposition of Equivalent Solutions of Iodides under

the influence of Activism. By ALBERT R. LEEDS. Mustrated

The Rotatory Power of Commercial Glucose and Grape Sugar. A Method of

Determining the Amount of Reducing Substances present by the Polari-

scope. By H. W. WILEY

The Effect of Hcating with Dilute Acids, and Treating with Animal Charcoal

on the Rotatory Power of Glucose; with Notes on the Estimation of Cane

Sugar and Glucose in Mixtures. By H. W. WILEY

Salt solutions and the Absorption of Gases. By E. L. NICHOLS

Notes on Water Analysis. By A. A. BRENEMAN

On Colors for Salt-glazed Pottery. By A. A. BRENEMAN

On the Deticiencies of Meteorological Work in data of value to Agriculture,

and Means for supplying them. By WM. MCMURTRIE

The Action of Sunlight on Glass. By THOMAS GAFFIELD

The discovery of Oxide of Antimony, in extensive lodes, in Sonora, Mexico.

By E. T. Cox

Remarks on tables for the reduction to zero of the measured volumes of gases.

Abstract. By EDWARD W. MORLEY

The most convenient scale for a thermometer used in gas analysis. Abstract.

By EDWARD W. MORLEY

Remarks on Jolly's apparatus for determining the amount of oxygen in air.

Abstract. By EDWARD W. MORLEY

Some points in the construction of an apparatus for the accurate analysis of

gases. Abstract. By EDWARD W. MORLEY

Numerical results for the mean ratio of oxygen to the sum of oxygen and

nitrogen in atmospheric air. Abstract. By EDWARD W. MORLEY

Some conclusions as to the cause of the frequent fluctuations in the ratio of

oxygen to nitrogen in the air at different times. Abstract. By EDWARD

W. MORLEY

The soil supply of nitrogen for plants. Abstract. By W. 0. ATWATER

The determination of phosphoric acid by the molybdic method. Abstract.

By W.0. ATWATER

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SECTION B. NATURAL HISTORY.

Address of ALEXANDER AGASSIZ, Vice President

389

COMMUNICATIONS.

415

426

427

429

431

435
437

447

510

On the Progress of Geological Investigation in New Brunswick, 1870 – 1880.

By L. W. BAILEY
The Cupriferous Series in Minnesota. By N. H. WINCHELL
An attempt to estimate approximately the Date of the close of the Glacial

Epoch, from an inspection of the Kames and Kettle-holes of New Eng.

land. Abstract. By G. FREDERICK WRIGHT
The Iron Ores of the Brandon Period. Abstract. By henry CARVILI

LEWIS
On the age of the Copper-bearing Rocks of Lake Superior. Abstract. By M.

E, WADSWORTA
Turquoise of New Mexico. By B. SILLIMAN. Illustrated
The Island of Montreal an Island, not in the St. Lawrence, but in the Ottawa.

By WILLIAM BOYD. Illustrated
The Law of Land-forming on our Globe. By RICHARD OWEN
On Maximum Synchronous Glaciation. By W.J. MCGEE. Illustrated
The Kames or Eskers of Maine. By GEORGE H. STONE. Mustrated
Preservation of fossil Insects and Plants on Mazon Creek. By J. W. PIKE
The Fossil Dinocerata in the E. M. Museum at Princeton, New Jersey.

Abstract. By FRANKLIN C. HILL. Illustrated
Transformations of Planorbis at Steinheim, with remarks on the effects of

gravity upon the forms of shells and animals. Abstract. By ALPHEUS

Hyatt. Illustrated
On the Study of Comparative Anatomy as a part of the Medical Curriculum.

By HARRISON ALLEN
Plan of the Cerebro-spinal Nervous System. Abstract. By S. V. CLEVENGER.
Evidences of the Effect of Chemico-physical Influences in the Evolution of

Branchiopod Crustaceans. By CARL F. GISSLER
On Color-blindness. Abstract. By B. JOY JEFFRIES
The First Decade of the United States Fish Commission : its plan of work

and accomplished results, scientitic and economical. By G. BROWN

GOODE
The Spanish Mackerel, and its Artificial Propagation. By CHARLES W.

SMILEY

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