My thanks for courtesies extended to me in connection with this research are due to Dr. R. C. Benner, Mr. J. J. O’Connor, Jr., Dr. W. W. Strong and Mr. E. H. McClelland. Bibliography of References Cited in the Text On the pathology of smoke 1. =Arloing=, Saturnin. Influence de la lumière sur la végétation et les propriétés pathogènes du bacillus. 1885. (In Comptes rendus hebdomadaires des séances de L’Académie des sciences, v. 100, p. 378-381.) 2. =Buckle=, Henry Thomas. History of civilization in England. 280 w. v. 1, p. 158. 1894. 3. =Climate= in the treatment of disease. 2220 w. 1910. (In Encyclopædia Britannica, 11th ed., v. 6, p. 526.) 4. =Cohen=, Julius Berend, & =Ruston=, Arthur G. Smoke; a study of town air. London. 88 p. Ill. 1912. _The same, review._ 1912. (In Rauch und staub, v. 2, p. 238.) 5. =Dexter=, Edwin Grant. Conduct and the weather; an inductive study of the mental effects of definite meteorological conditions. 103 p. 14 diag. 1899. (In Psychological review, Series of monograph supplements, v. 2, no. 6, May, 1899.) The child and the weather. 4 diag. 1898. (In Pedagogical seminary, v. 5, p. 512-522.) Influence of the weather upon crime. 6 diag. 1899. (In Popular science monthly, v. 55, p. 653-660.) School deportment and the weather. 1900. (In Educational review, v. 19, p. 160-168.) Drunkenness and the weather. 7 diag. 1900. (In Annals of the American Academy of Political and Social Science, v. 16, p. 421-434.) Suicide and the weather. 6 diag. 1901. (In Popular science monthly, v. 58, p. 604-615.) Ethics and the weather. 1901. (In International journal of ethics, v. 11, p. 481-492.) The mental effects of the weather. 4 diag. 1899. (In Science, n. s., v. 10, p. 176-180.) 6. =Duclaux=, Pierre Emile. 1887. (In Revue scientifique.) See reference in Lorand, Arnold. Old age deferred. 1912. p. 256. 7. =Finsen=, Niels R. Uber die anwendung von concentrirten chemischen lichtstrahlen in der medicin. Leipzig. 1899. 52 p. Meddelelser fra Finsens medicinske lysinstitut. Kjöbenhavn. 165 p. 1899. 1894, Kjöbenhavn. (In Hospitalstidende, p. 1209-1239.) 8. =Gillespie=, C. G. K. Physical effects of air pollution. 12 dr. 1887. (In Manchester and Salford Noxious Vapors Abatement Association. Lectures on air pollution, no. 5, p. 55-70.) 9. =Hall=, G. Stanley, & =Wallin=, J. E. Wallace. How children and youth think and feel about clouds. 1902. (In Pedagogical seminary, v. 9, p. 460-506.) 10. =Kershaw=, John B. C. Notes on recent progress in the campaign against black smoke in the United Kingdom. 1912. (In Papers read at the Smoke Abatement Conferences, March ... 1912, p. 68-75.) 11. =Lemon=, J. S. Psychic effects of the weather. 1894. (In American journal of psychology, v. 6, p. 277-279.) 12. =Lempfert=, R. G. K.