MALTHUSIANISM BY WARREN S. THOMPSON, A. M., SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN THE FACULTY OF POLITICAL SCIENCE COLUMBIA UNIVERSITY NEW YORK 1915 PREFACE I FIRST began to work on the question of population at the suggestion of Professor Giddings. I soon found that there was a large amount of statistical material bearing upon this subject which had, for the most part, been neglected in the discussions of the growth of population. The effort to make use of some of this material has resulted in this essay. At all stages of my work I have been able to profit by the suggestions and criticisms of a number of the men teaching sociology and economics at Columbia. I am under special obligations, however, to Professors Cooley and Chaddock who have read the proofs in addition to the other aid they have given me. Ann Arbor, April, 1915. W. S. THOMPSON. 349] 311467 5 |