Includes appendix and index.

Chapter I. On substitutions; Chapter II. The definition of a group; Chapter III. On the simpler properties of a group which are independent of its mode of representation; Chapter IV. On abelian groups; Chapter V. On groups whose orders are powers of primes; Chapter VI. On sylow's theorem; Chapter VII. On the composition-series of a group; Chapter VIII,. On substitution groups: transitive and intransitive groups; Chapter IX. On substitution groups: primitive and imprimitive groups; Chapter X. On substitution groups: transitivity and primitivity (concluding properties); Chapter XI. On the isomorphism of a group with itself; Chapter XII. On the graphical representation of a group; Chapter XIII. On the graphical representation of groups: groups of genus zero and unity; Chapter XIV. On the linear group; Chapter XV. On soluble and composite groups.