Translated by W. B. Christopherson. London, 1918.

(16) Babinski, J. F., and Froment, J. _Hysteria or Pithiatism, and
Reflex Nervous Disorders in the Neurology of the War._ Translated by J.
D. Rolleston, with a preface by E. Farquhar Buzzard. London, 1918.

2. The Natural History of War:

(1) Sumner, William G. _War and Other Essays._ Edited with an
introduction by Albert Galloway Keller. New Haven, 1911.

(2) Letourneau, Ch. _La Guerre dans les diverses races humaines._ Paris,
1895.

(3) Frobenius, Leo. _Weltgeschichte des Krieges._ Unter Mitwirkung von
Oberstleutnant a. D. H. Frobenius u. Korvetten-Kapitaen a. D. E.
Kohlhauer. Hannover, 1903.

(4) Bakeless, John. _The Economic Causes of Modern Wars._ A study of the
period 1878-1918. New York, 1921.

(5) Crosby, Oscar T. _International War, Its Causes and Its Cure._
London, 1919.

(6) Sombart, Werner. _Krieg und Kapitalismus._ Studien zur
Entwicklungsgeschichte des modernen Kapitalismus. Vol. II, Muenchen,
1913.

(7) Lagorgette, Jean. _Le Role de la guerre._ Etude de sociologie
generale. Preface de M. Anatole Leroy-Beaulieu. Paris, 1906.

(8) Steinmetz, S. R. _Der Krieg als sociologisches Problem._ Pp. 21 ff.
Amsterdam, 1899.

(9) ----. _Die Philosophie des Krieges._ "Natur- und
kultur-philosophische Bibliothek," Band VI. Leipzig, 1907.

(10) Constantin, A. _Le role sociologique de la guerre et le sentiment
national._ Suivi de la guerre comme moyen de selection collective, par
S. R. Steinmetz. "Bibliotheque scientifique internationale," Tome CVIII.
Paris. 1907.

(11) Keller, Albert G. _Through War to Peace._ New York, 1918.

(12) Worms, Rene, editor. "Les luttes sociales." Etudes et paroles de E.
Levasseur, Lord Avebury, Rene Worms, J. Novicow, Lester F. Ward, A. P.
Xenopol, Louis Gumplowicz, Ferdinand Toennies, Raoul de la Grasserie,
Simon Halpercine, Ludwig Stein, Emile Worms, Charles M. Limousin,
Frederick Harrison, C. L. Loch, G. Arcoleo, R. Garofalo, J. K.
Kochanowski, Leon Phillipe, Alfredo Niceforo, N. A. Abrikossof, Adolphe
Landry. _Annales de l'institut international de sociologie._ Tome XI.
Paris, 1907.

(13) Fielding-Hall, H. _Nature of War and Its Causes._ London, 1917.

(14) Oliver, Frederick S. _Ordeal by Battle._ London, 1915.

3. War and Human Nature:

(1) Petit-Dutaillis, C. E. "L'Appel de guerre en Dauphine Ier 2 aout
1914," _Annales de l'Universite de Grenoble_, XXVII (1915), 1-59.
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