From a Photo by Gunn & Stuart, Richmond.]

From a Photo by Gunn & Stuart, Richmond.]

From a Photo. by Naegeli, New York.]

[Illustration: Madge Erskine From a Photo. by Allison & Allison, Belfast.]

[Illustration: Dorothy Birch Done From a Photo.

(This photo is the frontispiece of the collection of essays entitled "Darwinism and Modern Science," edited by A.C. Seward and published in 1909).

From a photo in possession of E.J. Welch, of the Howitt Relief Expedition.

From a photo in the possession of E.J. Welch.] We have now to deal with an exploring expedition of greater notoriety than that of any similar enterprise in the annals of Australia, though its results in the way of actual exploration in the true meaning of the term were quite insignificant.

Photo, Freeman, Sydney.]

Sir Thomas Elder, G.C.M.G. Photo: Duryea, Adelaide.

Photo: Duryea, Adelaide.]

Photo: Mathewson, Brisbane.]

FOR PAPER PHOTO NEGATIVES.

Simply by pressure, as extremely heavy rolling will render such paper almost as transparent as glass, a fact abundantly demonstrated by Mr. Woodbury in his experiments on the Photo-Filigrane process, and confirmed by some trials which we have made.

* INSTANTANEOUS PHOTO SHUTTER.

M. Audra, in the name of M. Braun, of Angoulême, has presented to the Photo Society of France a new instantaneous shutter.

Photo research & bibliography by Aimee Crane.

Photo research & bibliography by Aimee Crane.

Jour. of Photo.

In a brief communication to the editor of the Photo.

[Footnote 3: Photo.

I am now at liberty to state that my photo-electric battery, presently to be described, marks an advance in the direction indicated.

The light, for instance, passes through the gold and acts upon its junction with the selenium, developing an electromotive force which results in a current proceeding from the metal back, through the external circuit, to the gold in front, thus forming a photo-electric dry pile or battery.

The light to be measured is caused to shine upon a photo-electric current-generating cell, and the current thus produced flows through a galvano-metric coil in circuit, whose index indicates upon its scale the intensity of the light.

Photo-electric regulator.

Ned Trent followed through the narrow, uncarpeted hall with the faded photograph of Westminster, down the crooked steep stairs with the creaking degrees, and finally into the Council Room once more, with its heavy rafters, its two fireplaces, its long table, and its narrow windows, "Bekawait!"

To the best of my judgment, the original photograph is a very exact average of its components; not one feature in it appears identical with that of any one of them, but it contains a resemblance to all, and is not more like to one of them than to another.

1 shows the simple apparatus which carries the prism and on which the photograph is mounted.

When it was necessary the photograph was reversed.

The result is a photograph having a sharply-defined cross surrounded by four discs of precisely uniform tint, and between each pair of arms of the cross there is a very faint dot.

This photograph shows many things.

Lewisham suddenly found himself being shown a photograph under a lamp.

He returned the photograph solemnly to its envelope, regarding Lewisham with an air of one who has performed the ceremony of blood-brotherhood.

GENERAL JOHN W. GEARY From a photograph taken, in 1866, by Draper and Husted.

SAMUEL NELSON From a photograph.

From a photograph by Brady.

JOHN CALHOUN From a painting by D.C. Fabronius, after a photograph by Brady.

ANSON BURLINGAME From a photograph by William Shaw.

DAVID COLBRETH BRODERICK From a photograph by Brady.

JOHN BROWN From a photograph by J.W. Black & Co. HOUSE IN WHICH JOHN BROWN WAS BORN, TORRINGTON, CONNECTICUT From a photograph lent by Frank B. Sanborn.

JOHN BROWN From a photograph by J.W. Black & Co. HOUSE IN WHICH JOHN BROWN WAS BORN, TORRINGTON, CONNECTICUT From a photograph lent by Frank B. Sanborn.

CALEB CUSHING From a photograph by Brady.

W.L. YANCEY From a photograph by Cook.

FACSIMILE OF LINCOLN'S LETTER OF ACCEPTANCE JOHN BELL From a photograph by Brady.

GENERAL HENRY A. WISE From a photograph by Brady.

THE WIGWAM AT CHICAGO IN WHICH LINCOLN WAS NOMINATED GENERAL ROBERT ANDERSON From a photograph by Brady.

JAMES BUCHANAN From a photograph by Brady.

LEWIS CASS From a photograph by Brady.

GENERAL ROBERT TOOMBS From a photograph.

JUSTIN S. MORRILL From a photograph by Brady.