In reviewing the history of Cæsar’s invasions of Britain we naturally inquire what was his object in fitting out those expeditions, why did they fail and why did he acquiesce in their failure. Whatever may have been the motive of the first (which, according to him, was chiefly the assistance given by the Britons to the cause of his Gaulish enemies), the second expedition at any rate, on which from 20,000 to 30,000 men were employed, cannot have been a mere reconnaissance, undertaken in the interests of scientific discovery. It was no doubt politic to stimulate the zeal of his partisans in Rome by voyages and marches which appeared to be Beyond the utmost bounds of human thought, but the general would hardly have spent so much treasure and risked the lives of so many of his legionaries without some hope of substantial advantage to himself, his soldiers, or the republic. Evidently the Britons fought better than he expected. Probably also, the forests and the marshes of the country made the movements of his troops exceptionally difficult. We can perceive also that the country was not so rich as he had hoped to find it--an important consideration for a general who had to reward his soldiers by frequent opportunities of “loot”. “We already know,” wrote Cicero to his brother Quintus, “that there is not an ounce of silver in that island nor any hope of booty except slaves, among whom I do not think you will expect to find any skilled in literature or music.” The only spoil that we hear of Cæsar’s carrying back from Britain was a breastplate adorned with precious pearls, which he dedicated in the Temple of Victory at Rome.