"A hurrying influx of memories" means

Turning towards the hearth, where the two logs had fallen apart, and sent forth only a red uncertain glimmer, he seated himself on his fireside chair, and was stooping to push his logs together, when, to his blurred vision, it seemed as if there were gold on the floor in front of the hearth. Gold!—his own gold—brought back to him as mysteriously as it had been taken away! He felt his heart begin to beat violently, and for a few moments he was unable to stretch out his hand and grasp the restored treasure. The heap of gold seemed to glow and get larger beneath his agitated gaze. He leaned forward at last, and stretched forth his hand; but instead of the hard coin with the familiar resisting outline, his fingers encountered soft warm curls. In utter amazement, Silas fell on his knees and bent his head low to examine the marvel: it was a sleeping child—a round, fair thing, with soft yellow rings all over its head. Could this be his little sister come back to him in a dream—his little sister whom he had carried about in his arms for a year before she died, when he was a small boy without shoes or stockings? That was the first thought that darted across Silas’s blank wonderment. Was it a dream? He rose to his feet again, pushed his logs together, and, throwing on some dried leaves and sticks, raised a flame; but the flame did not disperse the vision—it only lit up more distinctly the little round form of the child, and its shabby clothing. It was very much like his little sister. Silas sank into his chair powerless, under the double presence of an inexplicable surprise and a hurrying influx of memories.