These are now known as Venn Diagrams, and are often used in teaching elementary mathematics. The Principles of Empirical or Inductive Logic is one of three standard texts he published upon this topic.

An Essay On The Foundations And Province Of The Theory Of Probability, With Especial Reference To Its Logical Bearings And Its Application To Moral And Social Science, And To Statistics.

This volume of 'reminiscences of a reading man' contains articles he contributed to the college magazine, The Caian and speeches and addresses given at College Chapel and Hall.