In spite of a continuing sense of national identity, Scotland in the eighteenth century was a country of marked regional and ethnic differences. The major division was between the English-speaking areas, all in what is called the Lowlands, and the area of Gaelic usage, the Highlands. The line dividing English from Gaelic speech had been narrowing down the Gaeltacht for centuries, and by the mid-eighteenth century lay very near to the great geological fault which makes the highland edge, though even so there were English-speaking areas to the north of the fault: most of the plain forming the southern coast of the Moray Firth, the town of Inverness, the triangle of Caithness lying beyond the county of Sutherland. The division was not simply one of speech, but of culture, social structure and the means of disseminating culture. There were, before the 1780s, practically no printed books in Gaelic: a translation of the psalms existed, but was not readily available, since it had never been properly distributed. The lack of an Old Testament in Gaelic meant that the imageries used in Scottish and in Gaelic literature were totally separate. Few even of educated men in the Highlands could express themselves in Gaelic on paper with accepted orthography. Gaelic culture was mostly conveyed in song, and usually by the physical presence of the singer. The poetic base of these songs might be the creation of either sex, though male assumptions have sometimes left the name of women poets unknown. The highland area was poor and economically backward, feeding itself marginally on its own grain and the erratic supply of milk and blood from its cattle. Difficulties in land transport perpetuated poverty.