TABLE OF CONTENTS.

Officers of the Cleveland Meeting

Council of the Cleveland Meeting

Local Committee for the Cleveland Meeting

Special Committees of the Association

Officers elected for the Toronto Meeting

Meetings and Officers of the Association of Amer. Geologists and Naturalists

Meetings and Officers of the Association

Comparative Table of members and attendance at meetings

Act of Incorporation

Constitution of the Association

Order of Proceeding in Organizing a Meeting

Members of the Association

Patrons

Members

Honorary Fellows

Fellows

Deceased Members

IN GENERAL SESSIONS.

ADDRESS OF The Retiring PRESIDENT, S. P. LANGLEY

Report of the Committee on Indexing Chemical Literature

Report of the Committee on Physics-teaching

Report of the Committee on the Preservation of Archæologic Remains on the

public lands

Report of the Committee to secure from Congress the Abolition of the Duties

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on Scientific Books and Apparatus imported into this country

Report of the Committee on Anatomical Nomenclature with special reference

to the Brain . . . .

Report of Committee on International Congress of Geologists

Report of Special Agent of Transportation for the Association to act with the

Local Committees

Obliteration from illumination (stellar photometry). By HENRY M. PARK-

HURST

61

A method of representing the imaginary elements of a geometric figure and

of using them in construction. By JAMES MCMAHON

On the value of the solar parallax deducible from the American photographs
of the last transit of Venus. By WM. HARKNESS

The directional theory of screws. By E. W. HYDE (Title)

Deflections of the plumb-line and variations of gravity in the Hawaiian

islands. By ERASMUS D. PRESTON (Title)

On a new method of construction for equatorial domes. By G. W. HOUGH

(Title)

On a new catalogue of variable stars. By SETH C. CHANDLER (Title).

A new short-period variable in Autlia. By HENRY M. PAUL (Title)

Laws of frequency of errors of interpolated logarithms, etc., dependent on

first differences; and a comparison of the theoretical with the actual

distribution of the errors of 1000 interpolated values. By R. S. WOOD-

WARD (Title)

Some considerations on the fundamental ideas of quaternions. By E. W.

HYDE (Title)

A desideratum in the American ephemeris. By GEORGE C. COMSTOCK (Title)

Fusiyama, Japan, as a site for a mountain observatory. By DAVID P. TODD

(Title)

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On the supposed canals on the surface of the planet Mars. By ASAPH HALL

(Title)

Note on the mathematics of the seismoscope. By CLARENCE A. WALDO

On some old and new theorems in solid geometry. By H. B. NEWSON (Title)

Orbit of Brooks' comet, 1888 c. By LEWIS Boss (Title)

Preliminary elements of the orbit of comets, 1888, ix. By WILLIAM HOOVER

(Title).

On the measure of inclination of two planes in space of four dimensions. By

IRVING STRINGHAM (Title)

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ADDRESS OF VICE PRESIDENT, ALBERT A. MICHELSON

On the diffusion of heat in homogeneous rectangular masses, with special

reference to bars used as standards of length. By R. S. WOODWARD

A note upon retinal photography. By CHARLES A. OLIVER

The quality of musical sounds. By W. LECONTE STEVENS

On dynamical units. By T. C. MENDENHALL.

Protection of watches against magnetism. By C. J. H. WOODBURY

Some photographic experiments on the color of the sky. By FRANK P.

WHITMAN

On a method of determining the emissivity of a metallic bar cooling or heat-

ing in air. By R. S. WOODWARD

On an experiment bearing upon the question of the direction and velocity of

the electric current. By E. L. NICHOLS and WILLIAM S. FRANKLIN

On the effect of the added term of the equation of the quadrant electrometer

on its deflection curves. By T. C. MENDENHALL

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Incandescent lamps considered as

machines for transforming electrical

energy into the energy of light. By ERNEST Merritt.

Floating dynamometer. By J. BURKITT WEBB

"Overhauling" in a mechanical power. By J. BURKITT WEBB
Impact in the injector. By J. BURKITT WEBB
Novel form of electro-magnetic telephone. By R. B. FULTON.

A new pressure indicator or recorder (experimental model). By W. H.

BRISTOL

A new indicating or self-registering thermometer (experimental model).

By W. H. BRISTOL

A new indicating or self-registering barometer (experimental model). By

W. H. BRISTOL

Best methods of making instantaneous photographs during both day and

night. Illustrated by experiments and projections. By E. P. How.

LAND

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Description of a new and improved dissolver for the magic lantern with ex-
hibition of slides. By E. P. HOWLAND
Spectro-photometric comparison of sources of artificial illumination. By
E. L. NICHOLS and W. S. FRANKLIN (Title)

On the radiation of heat between metals by induction and by conduction,

with numerical results for steel and brass. By WM. A. ROGERS

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94

On the definitions of the terms weight and mass. By WM. A. ROGERS

(Title)

94

The causes of sudden variations of atmospheric pressure. By M. A. VEEDER
(Title)

Description of apparatus for making a light-wave the standard of length.

By A. A. MICHELSON and EDWARD E. MORLEY (Title)

Two strokes of lightning. By J. W. MOORE (Title).

A galvanometer for the vertical lantern. By J. W. MOORE (Title).

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SECTION C.

CHEMISTRY.

Officers of Section C

98

ADDRESS OF VICE PRESIDENT, CHARLES E. MUNROE

Coëfficients of volatility for aqueous chlorhydric acid. By ROBERT B.

WARDER

On a new method for the determination of the atomic weight of oxygen. By

W. A. NOYES

Hampe's method of determining CuO in metallic copper. By FRED. P.

DEWEY

On the constituents of wintergreen leaves (Gaultheria procumbens, Lin.). By

FREDERICK B. POWER and NORBERT C. WERBKE

On the oxidation of nitro-p-xylene with potassium ferricyanide. By W. A.

NOYES

Propylidene di-ethyl and di-methyl ethers. By SPENCER B. NEWBERRY

A new vegetable dye. By THOMAS TAYLOR

123

Fatal poisoning by carbon monoxide. By W. P. MASON

126

The safety of commercial kerosene oils. By SPENCER B. NEWBERRY

Lake Erie water at Cleveland, O. By ALBERT W. SMITH

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127

Some notes on progress in chemical methods of water analysis with special

reference to the ammonia process. By FRANK H. MORGAN

Preliminary note upon iodine as a reagent in the analysis of drinking water.

By FRANK H. MORGAN

Some modifications of the methods of organic analysis by combustion. By

WM. L. DUDLEY .

Preliminary note on the final product of the action of concentrated sulphuric

acid on sugar. By FRANK H. MORGAN

The chemistry of fish. By W. O. ATWATER

The quantities of nitrogen in protein compounds. By W. O. ATWATER

On the presence and significance of ammonia in potable waters. By E. H.

S. BAILEY (Title)

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131

Composition of salt brines in northern Ohio with special reference to its bro-

mine and lithium contents. By C. F. MABERY and HERBERT H. Dow

(Title)

The crystals of butter and fats, illustrated by lantern pictures. By THOS.

TAYLOR (Title)

Exhibition of specimens of alloys of cast iron and aluminum. By W. J.

KEEP (Title). .

131

The Pierce process of making charcoal and exhibition of specimens of prod

ucts. By O. H. LANDRETH (Title)

131

Presentation and discussion of laboratory methods and devices. By MEM-

SECTION D. MECHANICAL SCIENCE AND ENGINEERING.

Officers of Section D

134

The influence of aluminum upon cast iron.

and L. D. VORCE.

By W. J. KEEP, C. F. MABERY

135

The second law of thermodynamics. By R. H. THURSTON

The economical production of charcoal for blast furnace purposes. By OLIN

H. LANDRETH

On the influence of moisture in steam upon the steam consumption per pound

of engines of less than fifty pounds. By J. E. DENTON

On the possibility of identifying dry or saturated steam by visual observation

of a jet of such steam flowing into the atmosphere. By J. E. DENTON

Relative economy of high speed engines of less than fifty pounds, using steam

by expansion and throttling respectively. By J. E. DENTON

Effect of friction at the connecting rod bearings on the forces transmitted.

By D. S. JACOBUS

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153

General solution of the transmission of force in a steam engine, including the

action of friction, acceleration and gravity. By D. S. JACOBUS

The Panama canal as it is. By WOLFRED NELSON (Title)

ADDRESS OF VICE PRESIDENT, GEORGE H. COOK

The discovery of sporocarps in the Ohio shale. By EDWARD ORTON
The new horizons of oil and gas in the Mississippi valley. By EDWARD
ORTON

The cretaceous deposits of North America. By CHARLES A. WHITE
On the occurrence of the "forest bed" beneath intra-moraínic drift. By FRANK
LEVERETT

Recent discoveries of rock-salt in Kansas. By ROBERT HAY
The discoveries of fossil tracks in the triassic of York County, Pa. By ATREUS
WANNER

The oil fields of Colorado. By J. S. NEWBERRY

The age and correlation of the mesozoic rocks of the Sergipe-Alagoas basin

158

The age of the crystalline rocks of Arkansas. By JOHN C. BRANNER

The peridotites of Pike County, Arkansas. BY JOHN C. BRANNER and R. N.

BRACKETT

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188

The distribution of the granites of the northwestern states and their general

lithologic characters. By C. W. HALL

189

On the intensity of earthquakes, with approximate calculations of the energy

involved. By T. C. MENDENHALL

An ancient channel of the Ohio at Cincinnati. By JOSEPH F. JAMES

Notes on the origin and history of the Great Lakes of North America.

W. SPENCER

196

By J.

197

Remarks on an undescribed vegetable organism from the Fort Union group of

Montana. By LESTER F. WARD

The paleontologic history of the genus Platanus. By LESTER F. WARD

Evidence that Lake Cheyenne continued till the ice age. By J. E. TODD

The terraces of the Missouri. By J. E. TODD

Systematic results of a field study of the Archæan rocks of the northwest. By

ALEXANDER WINCHELL

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The use of fossils in determining the age of geologic terranes. By H. S.

WILLIAMS

The fossil wood and lignites of the Potomac formation. By F. H. KNOWLTON

The glacial boundary in southeastern Dakota. By G. FREDERICK WRIGHT

Some thoughts on eruptive rocks with special reference to those of Minnesota.

By N. H. WINCHELL

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The occurrence of chalk in the North American cretaceous. By ROBERT T.
HILL (Title).

Evidence that the Mohawk river at a very remote period changed its channel

of drainage. By A. S. TIFFANY (Title).

Extra-morainic striæ in the Missouri valley. By J. E. TODD (Title)

The Archimedes limestones and associated rocks in northwestern Arkansas.

Geological history of the Ozark up-lift. By G. C. BROADHEAD (Title)

On a new method of constructing geological maps. By JAMES T. B. IVES

(Title)

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Some physiographic notes on northeastern Minnesota. By C. W. HALL (Title)

Additional facts respecting the law governing the distribution in space of

seismism. By RICHARD OWEN (Title)

Probable derivation of the terrestrial spheroid from the rhombic dodecahe-

dron. By RICHARD OWEN (Title).

On the trap dikes of Kennebunkport, Me. By J. F. KEMP (Title)

Notes on the preglacial drainage of western Pennsylvania. By P. MAX

FASHAY (Title).

Ivorydale well in Mill Creek Valley, Ohio. By Jos. F. JAMES (Title)

A new gas well at Cleveland, Ohio. By H. P. CUSHING (Title)

Geology of Cleveland, Ohio. By H. P. CUSHING (Title)

The Cleveland shale and its fossil fishes. By J. S. NEWBERRY (Title)

Discovery of the production of immunity from contagious diseases by chem-

ical substances formed during bacterial multiplication. By D. E. SAL-

Some new experiments in producing anæsthesia with nitrous oxide and air,

and nitrous oxide and oxygen in condensed air-chambers, illustrated

by experiments on an animal. By E. P. HOWLAND

A phase of evolution. By E. LEWIS STURTEVANT

A study of the Hydrangea, as to the objects of cross-fertilization. By THOS.

MEEHAN

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283

Some new facts in the life-history of Yucca and the yucca moth. By THOMAS

MEEHAN

On the cause and significance of dichogamy in flowers. By THOS. MEEHAN

Adaptation in the honeysuckle and insect visitors. By THOMAS MEEHAN

Notes on the inflorescence of Callitriche. By JOSEPH SCHRENK

Hygroscopic movements in the cone-scales of Abietineæ. By ALBERT N.

PRENTISS

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285

Sexual characters of the species of the coleopterous genus Lachnosterna.

By JOHN B. SMITH

On the structure of the skull of the larva of Amphiuma. By O. P. HAY

Notice of a supposed new species of Branchipus from Indiana. By O. P.

HAY

Color variations of Nebraska flying squirrels. By W. EDGAR TAYLOR

The muscles of the soft palate in the domestic cat. By T. B. STOWELL

Comparison of the flora of eastern and western Michigan in the latitude of 44°

40'. By J. W. BEAL

Observations of the succession on forests in northern Michigan. By W.

BEAL

The systematic position of the Rhizocarpeæ. BY DOUGLAS H. CAMPBELL

Pollen germination and pollen measurements. By BYRON D. HALSTED

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W. J.

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