For Perry’s work in this field, no less than for my own, Rivers’ illuminating and truly epoch-making researches (=64= to =70=) have cleared the ground. Not only has he removed from the path of investigators the apparently insuperable obstacles to the demonstration of the spread of cultures by showing how useful arts can be lost (=65=); but he has analysed the social organisation of Oceania in such a way that the various waves of immigration into the Pacific can be identified and with certainty be referred back to Indonesia (=69=). Many other scholars in the past have produced evidence (for example =2=; =60=; =61= and =98=) to demonstrate that the Polynesians came from Indonesia; but Rivers analysed and defined the characteristic features of several streams of culture which flowed from Indonesia into the Pacific. Perry undertook the task of tracing these peoples through the Indonesian maze and pushing back their origins to India. In the present communication I shall attempt to sketch in broad outline the process of the gradual accumulation in Egypt and the neighbourhood of the cultural outfit of these great wanderers, and to follow them in their migrations west, south and east from the place where their curious assortment of customs and accomplishments became fortuitously associated one with the other (_Map II._). I cannot claim that my colleagues in this campaign against what seems to us to be the utterly mistaken precepts of modern ethnology see altogether eye to eye with me. They have been dealing exclusively with more primitive peoples amongst whom every new attainment, in arts and crafts, in beliefs and social organisation, in everything in fact that we regard as an element of civilization, has been introduced from without by more cultured races, or fashioned in the conflict between races of different traditions and ideals. My investigations, on the contrary, have been concerned mainly with the actual invention of the elements of civilization and with the people who created practically all of its ingredients—the ideas, the implements and methods of the arts and crafts which give expression to it. Though superficially my attitude may seem to clash with theirs, in that I am attempting to explain the primary origin of some of the things, with which they are dealing only as ready-made customs and beliefs that were handed on from people to people, there is no real antagonism between us. It is obvious that there must be a limit to the application of the borrowing-explanation; and when we are forced to consider the people who really invented things, it is necessary to frame some working hypothesis in explanation of such achievements, unless we feebly confess that it is useless to attempt such enquiries.