Illegitimacy And The Influence Of Seasons Upon Conduct: Two Studies In Demography (1892) is a book written by Albert Leffingwell that explores two different topics related to demography. The first study focuses on the issue of illegitimacy, examining the factors that contribute to the prevalence of children born out of wedlock. Leffingwell examines various social, economic, and cultural factors that may influence illegitimacy rates, including poverty,...