To the Lighthouse Part 1, Chapter 13 Summary

Mr. Bankes and Lily are talking about travel.
Lily is arrested by the sight of Mr. and Mrs. Ramsay watching a girl throw a ball, and this vision is enshrined for her as "marriage."
As Mrs. Ramsay turns and smiles at the couple, Lily realizes that Mrs. Ramsay wants her and William Bankes to marry.
Mrs. Ramsay expresses pleasure that Mr. Bankes will be joining them for dinner.
Prue runs into them, and Mrs. Ramsay asks her if Nancy was with the (still missing) group.