for his work on ribonucleaseandfor their contribution to the understanding of the connection between chemical structure and catalytic activity of the ribonuclease molecule
for their elucidation of the enzymatic mechanism underlying the synthesis of adenosine triphosphateandfor his discovery of an ion-transporting enzyme, Na+, K+ -ATPase
... but, later that evening, Kitty rejects him in the expectation that Vronsky is about to propose to her.
The following morning Stiva and Vronsky are at the station to ...