Only a relatively small part of the vast and varied terrain of human experience is mapped in the record we know as history; and over the charted area the paths along which human industries and institutions have developed are not always well marked. Looking back along these paths our view has the advantages and defects of hindsight. Of some of these paths we have only a limited view; some seem to have started from nothing, in the foreground of that terrain, although it is certain that that cannot have been. Other paths we can see clearly, stretching far back, and few so clearly as the fisheries path; this path goes back past Christ on the shores of Galilee, past the pharaohs on the Nile and Chinese sages by their ponds, past Indians on the American north-west coast, Eskimoes in the Arctic, and the Scandinavians, to man in his most primitive condition.