Excerpt from The Sociology of a New York City Block The chief basis for the classification of these nationalities has been the mass of observations made in three system atic visitations of all the families. The first of these was made in the fall of 1897, the second in the fall of 1899, and the third in 1900-1901. Since then the street has been irregularly observed and studied, and interesting facts have thus been gathered that could not be obtained at the time of the regular visitations. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.