Cass Timberlane, A Novel of Husbands and Wives by Sinclair Lewis

When the November snows had halted automobile wanderings, they began a placid habit of evenings at Bergheim. Sometimes Jinny brought Isis along and set her where she could watch. To Cass, this affection for the tiny glass cat was no sillier than Egyptian rites in which Jinny might have been a little wise priestess, her thin hands elevated in prayer to feline mysteries, in the ancient haze of the Nile.

Mrs. Higbee adopted Jinny, and one evening Cass heard them as they explored the upstairs, conferring on what should be done for Him.