One of the greatest chloroform covers ever drawn. The artist is Brian Bolland.
The cover depicts Catwoman being chloroformed from behind by Batman. There's a subtle sexual tension, with Catwoman trying to stay awake, while Batman's hand holds her stomach. Catwoman wraps a whip around Batman's neck, trying to escape.
The scene happens on a white background, emphasizing the shadows of the two characters.
Here's the complete K.O./wake-up/bondage/escape scene of Catwoman for issue #8.
Additional scans contributed by subtorp184