He sits at the fireplace in his study and receives the letter with the news of her wedding.

The close-up picture which shows us the enlargement of the engraved wedding announcement appears as an entirely new picture.

The room suddenly disappears and the hand which holds the card flashes up.

Again when we have read the card, it suddenly disappears and we are in the room again.

But when he has dreamily stirred the fire and sits down and gazes into the flames, then the room seems to dissolve, the lines blur, the details fade away, and while the walls and the whole room slowly melt, with the same slow transition the flower garden blossoms out, the flower garden where he and she sat together under the lilac bush and he confessed to her his boyish love.
And then the garden slowly vanishes and through the flowers we see once more the dim outlines of the room and they become sharper and sharper until we are in the midst of the study again and nothing is left of the vision of the past.
The technique of manufacturing such gradual transitions from one picture into another and back again demands much patience and is more difficult than the sudden change, as two exactly corresponding sets of views have to be produced and finally combined.