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SECTION B. PHYSICS.

Oficers of Section B ..

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 bcaring 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
Incandescent lamps considered as machines for transforming electrical

energy into the energy of light. By ERNEST MERRITT.

Floating dynamometer. By J. BURKITT WEBB

“Overliauling" 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. Ilow.

LAND

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SECTION C. CHEMISTRY.

Oficers of Section C

ADDR+S8 OF VICE PRESIDENT, CHARLES E. MUNROE

Coëficients 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. XOYES

Hampe's method of determining Cu,0 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

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

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

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

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

reference to the ammonia process. By FRANK H. MORGAN

Preliminary nole 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 ou sugar. By FRANK H. MORGAN

The chemistry of fish. By W.0. ATWATER

The quantities of nitrogen in protein compounds. By W.0. ATWATEK

On the presence and significance of ammonia in potable waters.

By E. H.

S. BAILEY (Title)

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).

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

ucts. By 0. H. LANDRETH (Title)

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

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BERS OF THE SECTION (Title)

Reports of Committees (Titles)

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SECTION E. GEOLOGY AND GEOGRAPHY.

Omcers of Section E

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-morainic 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

of Brazil. By John C. BRANNER.

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

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

lithologic characters. By C. W. HALL

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. By J.

W. SPENCER

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

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

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SECTION F. BIOLOGY.

Omicers of Section F

ADDRESS OF VICE PRESIDENT, CHARLES V. RILEY

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

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

MON

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

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

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

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 440

40'. By J. W. BEAL

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

BEAL

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

Pollen germination and pollen measurements. By BYRON D. HALSTED

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