From the year 1633 Harvey appears to have devoted much of his time to attendance upon the king and retainers of the court, so that we have little or no particular information of his movements for several years. We know, however, from Aubrey, that he accompanied Thomas Howard, Earl of Arundel, whose physician he was, in his extraordinary embassy to the emperor, in the year 1636.[15] In the course of this journey, Harvey had an opportunity of visiting several of the principal cities of Germany, and of making the acquaintance of many of the leading medical men of the time. The place of date of one of Harvey’s letters, that namely to Caspar Hofmann, from Nuremberg, in the month of May, 1636, has not been noticed; but his presence with the Earl of Arundel at once accounts for it; and we therefore see that Harvey’s offer to demonstrate to the distinguished professor of Nuremberg, the anatomical particulars which made the circulation of the blood a necessary conclusion was no vain boast, made at a distance, but a substantial proposition in presence of his opponent, and which there is tradition at least to assure us he was called upon to fulfil.--Harvey is reported to have made a public demonstration of his anatomical views at Nuremberg, satisfactory to all present save Caspar Hofmann himself; to whom, as he still continued to urge objections, the futile nature of which we in these days can readily understand, Harvey is further related to have deigned no other answer than by laying down the scalpel and retiring, conduct which we find in entire conformity with our estimate of the character of the man.[16] On his return to England, in the winter of 1636, Harvey must have resumed his place near the person of the sovereign, and by and by, as in duty bound, accompanied him on his first hostile expedition into Scotland in 1639, when matters were happily accommodated between the King and his Scottish subjects, whom he had driven to take up arms so righteously in defence of their religious liberties. Harvey, as physician to the person, may be further presumed to have been with Charles when he marched towards the Border the following year, so memorable in the annals of English history, when the war with the Scots was renewed, when the king’s authority received the first check at the battle of Newbury, and when Charles, returning to his capital after his defeat, encountered the still more formidable opposition of the English Parliament.