DigiCat Publishing presents to you this special edition of "Child Psychology I: Development in the First Four Years" by Vilhelm Rasmussen. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.

The documents in this series originated with a proposal made by R. Buckminster Fuller to the International Union of Architects (I. U. A.) at their VIIth Congress in London, England in July, 1961, launching the World Design Science Decade. He proposed then that the architectural schools around the world be encouraged by the I. U. A. to invest the next ten years in a continuing problem of how to make the total world's resources which [in 1961] serve only 40% serve 100% of humanity through competent design despite a continuing decrease of metal resources per capita. In essence, The World Design Science Decade series of documents suggests, in great detail, ways in which world architectural schools, and specifically their students, should initiate, and assume The Design Science Decade. The total series includes many of Fuller's most prescient ideas. A note from the series editor, John McHale: "Though the language of some of the texts may seem difficult at first approach, it should be borne in mind that one of our major problems in thinking today [1965] is the use of language systems which still represent a fixed, structurally compartmentalized world view. The terms available to us for the expression of dynamic, rather than static, concepts are far from satisfactory. Fuller's language is particularly representative of the 'transitional state' (of the western world) between the older, traditional, noun-centered culture to its present day, changing, verb-centered culture'. In his search for an adequately descriptive terminology he tends to employ concepts and usages from many different fields juxtaposed in ways which may be unfamiliar to those more customarily restrained within the vocabularies of particular disciplines." Description by the Buckminster Fuller Institute, courtesy of The Estate of R. Buckminster Fuller

These reports are the result of a collection of statistics of marriage and divorce for the years 1922- They represent the fourth- investigation on the subject made by the federal government. The first investigation, made by the former Department of Labor, covered the 20-year period 1867-1886; the second investigation made by the Bureau of the Census, covered the 20-year period 1887-1906; and the third investigation, also made by the Bureau of the Census, covered the calendar year 1916 cf. 1922, Letter of transmittal, p. ii.

This book is an outgrowth of one phase of an upper-division course on quantitative ecology, given each year for the past eight at Berkeley. I am most grateful to the students in that course and to many graduate students in the Berkeley Department of Zoology and Colleges of Engineering and Natural Resources whose spirited discussions inspired much of the book's content. I also am deeply grateful to those faculty colleagues with whom, at one time or another, I have shared courses or seminars in ecology or population biology, D.M. Auslander, L. Demetrius, G. Oster, O.H. Paris, F.A. Pitelka, A.M. Schultz, Y. Takahashi, D.B. Tyler, and P. Vogelhut, all of whom contributed substantially to the development of my thinking in those fields, to my Depart mental colleagues E. Polak and A.J. Thomasian, who guided me into the litera ture on numerical methods and stochastic processes, and to the graduate students who at one time or another have worked with me on population-biology projects, L.M. Brodnax, S-P. Chan, A. Elterman, G.C. Ferrell, D. Green, C. Hayashi, K-L. Lee, W.F. Martin Jr., D. May, J. Stamnes, G.E. Swanson, and I. Weeks, who, together, undoubtedly provided me with the greatest inspiration. I am indebted to the copy-editing and production staff of Springer-Verlag, especially to Ms. M. Muzeniek, for their diligence and skill, and to Mrs. Alice Peters, biomathematics editor, for her patience.

Vols. for 1950-19 contained treaties and international agreements issued by the Secretary of State as United States treaties and other international agreements.