"his daily whist party at his club"

Garrick Club, 1864
Public DomainGarrick Club, 1864 - Credit: Illustrated London News

Whist is a card game played by four players in two pairs.  These days you can play whist online.

The Assistant Commissioner’s club was one of a number of gentlemen’s clubs in London in the late nineteenth century, some of which still exist today. Membership was exclusive to men and could only be gained if you were recommended by an existing member and approved by the membership committee.