END OF THE THIRD WEEK.

[Special Cable to THE NEW YORK TIMES.]

IMBROS, (via Dedeaghatch, Turkey,) May 15, (Dispatch to The London Daily Chronicle.)—­Operations in the Dardanelles have now been in full swing for just three weeks, and a glance from the mountaintop here at the far-spread region over which the war has been and is being waged shows instantly the material progress which has been made in that time.

When I first looked down on the fascinating and unique vision presented to my eyes from this point of vantage it was a sight truly marvelous.  A fleet of transports stood at the entrance to the strait, and to the north of Gaba Tepe the warships were hammering away at the mouth of the Dardanelles, and at several points along the western coast of the peninsula one could see at different points on the land that severe battles were being fought.  The heavy clouds of war hung over all, lit up grimly by the vivid flashes of the guns.  At times the din was tremendous and went on night and day without cessation.  Column after column of dense smoke betokened the falling of forts, and gradually the white puffs from our guns like long rollers on a broken coast advanced up the peninsula from the south and inland from the Gaba Tepe region.

Aeroplanes and dirigibles were always busy.  Destroyers and huge transports churned up foam, and submarines left their faint trace on the wide extent of bluest ocean.  The scene was one of war in all its picturesqueness and horror, for one could easily imagine awful scenes taking place under the far cloud of smoke and dust.  It was war in all its force seen so for the first time.

Today the scene is strangely altered.  Nearly all the transports have gone up the western coast of the peninsula, but a few battleships stand on sentry-go, as it were.  All resistance in the region directly opposite has been fought down.  The smoke coming from over the ridge in front shows that our warships have advanced far up to Kilid Bahr, while comparatively few ships stand at the entrance of the strait.  From the inside the Asiatic coast is being bombarded, but the picturesque features of the scene have gone.  It is a change which marks triumphant progress.  The Turk is being slowly but surely pushed back, dying gamely.

Two days of thick mist were followed by a forty-eight hours’ armistice granted to the Turks on Tuesday and Wednesday.  It was impossible to see anything of the operations.  Behind the veil of mist the fighting went sternly on and the big guns boomed incessantly.  Wednesday night they were particularly active.  Seldom in the past three weeks has the night sky been so brilliantly illuminated by the flashes of cannon.  Serious work is evidently being done or completed.  It was not until Thursday afternoon that the weather conditions made it possible to see the result of the warfare behind the screen of mist, and, as I have said, the whole aspect of the now familiar scene appears greatly changed when the coast of the peninsula is deserted by vessels, save for the few transports standing further out to sea than usual and half a dozen ships of war.