THE DESCRIPTIVE SOCIOLOGY. 1867-74. ÆT. 47-54.
IN the last chapter but one I had to make an overlap in the narrative, and here I have to make a double overlap. For not only while there were occurring the incidents set down in many preceding chapters, but also while there were occurring those set down in the chapter described as an overlap, there was being carried on an undertaking, the progress of which I could not continually refer to without confusing the accounts of doings which mainly occupied me.
In Chapter XLI I briefly described certain preparations, then commenced, for the Principles of Sociology: saying how I had arranged to have collected for me, and put in fitly classified groups and tables, facts of all kinds, presented by numerous races, which illustrate social evolution under its various aspects. Though this classified compilation of materials was entered upon solely to facilitate my own work, yet, after having brought the mode of classification to a satisfactory form, and after having had some of the tables filled up, I decided to have the scheme executed with a view to publication: the facts being so presented, apart from hypotheses, as to aid all students of Social Science in testing such conclusions as they have drawn and in drawing others.