It was in the year 55 B.C. that Caesar, having overrun, if not having entirely conquered, Gaul, came to its northern coast and gazed eagerly across that unknown sea, beyond which had come strange warriors, extraordinarily strong and equally fearless, to aid those troublesome Gaulish fighting-men who had already given him four years of campaigning, and were still to prove themselves unsubdued. He had already felt the prowess of these "Britons," as they were called, and fighting having slackened somewhat, he conceived the idea of voyaging across the Channel in quest of glory and adventure in the dim and semi-fabled land of these mysterious strangers. "Caesar," he says, speaking of himself always in the third person, "determined to proceed into Britain because he understood that in almost all the Gallic wars succour had been supplied thence to our enemies." So much for his written reasons, but other things must have weighed with him. The lust of conquest would alone have impelled him forward beyond this very outer edge of the known world, even had he not desired to crush these allies of Gaul; but when wild tales reached him of the richness of the land that lay beyond this strait, whose cliffs he could dimly see, the impulse to invade it was irresistible. But Caesar was a cautious general, and rarely moved without having reconnoitred, and so he sent over a certain Volusenus to spy out that wonderful land whence came tin and skins, oysters, pearls, hunting dogs, gold, slaves, and terrible warriors. Volusenus sailed across the straits, and returned with quite as much information as could have been expected from one who had never left his ship. That sarcasm is Caesar's own, and no doubt he was in a peculiarly savage and sarcastic humour at the time, for although this Britain was so frequented by merchants, yet he could not find any one who would acknowledge having been there; and so his information as to the population, the shores and harbours of the country, remained vague and uncertain. And to add to the disappointments he had experienced from those crafty traders who wished to keep all knowledge of the island to themselves, this over-cautious Volusenus returned after four days with just such a hazy and indefinite story as he had been told before; the hearsay evidence of one who was too timorous to land!