Mr. E. W. Robertson, one of the latest and ablest upholders of this theory, thinks[74] there is scarcely sufficient evidence to justify any very decided conclusion as to the pre-existence of a Cymric population; and that, whilst it would be unquestionably erroneous to ascribe a Cymric origin to the Picts, the existence of a Celtic element akin to the Cymri, amongst the population of Alban before the arrival of the _Gwyddel Ffichti_, must remain to a certain extent an open question. Of all _a priori_ theories that have hitherto been advanced as to how Scotland was likely to have been at first peopled, that of Father Innes, the first writer who investigated the subject thoroughly and critically, appears to us to be the most plausible and natural, although even it is beset with many difficulties. It appears to him more natural and probable that the Caledonian Britons, or Picts, were of the same origin as the Britons of the south; that as these came in originally from the nearest coast of Gaul, as they multiplied in the island, they advanced to the north and settled there, carrying with them the customs and language of the South Britons.[75] We have thus endeavoured to lay before the reader, as fully as space permits, and as clearly and unprejudicedly as possible, the materials at present existing by means of which to form an opinion on the Pictish question, and the arguments _pro_ and _con_, mainly in their own words, urged by the partisans of the different theories. It appears to us that the data within reach are far too scanty to justify any one in coming to a settled conclusion, and that we must wait for more light before we can be justified in finally making up our minds on this perplexing subject.[76] At the present day we find that nearly the whole of the territory said to have been originally occupied by the Picts, is inhabited, and has been for centuries, by a population which in appearance is far more Teutonic than Celtic, and which undoubtedly speaks a broad Teutonic dialect.[77] And even in the district where the Gaelic language has been triumphant for ages, it is acknowledged even by the most devoted partisans of the Gaelic theory, that among the population there is a very considerable intermixture of the Teutonic element. Burton thinks, from a general view of the whole question, that the proportion of the Teutonic race that came into the use of the Gaelic, was much greater than the proportion of the Gaelic that came into the use of the Teutonic or Saxon, and that this may account for the contrasts of physical appearance to be seen in the Highlands.