He would like to kill his remembrance of her.

What better way than by thoughts of some other woman?
His brain had become so bemused by his potations of the previous night that he had at first only vague recollections of Sally Salisbury and how he had engaged to meet her.

But now that he was in the Gardens association of ideas brought her handsome, enticing face to his mind.
She would do as well as another to entertain him for the moment, and his eyes roved restlessly towards every woman he passed.
The orchestra was playing a dance tune, and Vane eagerly scanned the dancers, but saw no woman resembling Sally Salisbury.

Meanwhile Jarvis had left him with a parting drink, which by no means helped to clear his muddled brain.

Then suddenly Sally stood before him, unmasked and looking more fascinating than ever.
"You wicked man," said she with reproachful eyes, the dark silky lashes drooping momentarily on her painted cheeks.