Few of Harvey's sayings are recorded, but Aubrey tells us that someone having enlarged upon the merits of the Baconian philosophy in his presence, "Yes," said Harvey, "he writes philosophy like a chancellor." On which pithy reply diverse persons will put diverse interpretations. The illumination of experience may possibly tempt a modern follower of Harvey to expound the dark saying thus: "So this servile courtier, this intriguing politician, this unscrupulous lawyer, this witty master of phrases proposes to teach me my business in the intervals of his. I have borne with Riolan; let me also be patient with him." At any rate, I have no better reading to offer. In the latter half of the sixteenth and the beginning of the seventeenth centuries the future of physical science was safe enough in the hands of Gilbert, Galileo, Harvey, Descartes, and the noble army of investigators who flocked to their standard and followed up the advance of their leaders. I do not believe that their wonderfully rapid progress would have been one whit retarded if the _Novum Organon_ had never seen the light; while, if Harvey's little _Exercise_ had been lost, physiology would have stood still until another Harvey was born into the world. THE "DEFENESTRATION" AT PRAGUE THE THIRTY YEARS' WAR A.D. 1618 SAMUEL R. GARDINER CHARLES F. HORNE As the last great struggle between the contending sects of Europe for political as well as spiritual power the Thirty Years' War was one of the most important conflicts of the modern age. It was mainly carried on in the German states, but during its later stages all the great European powers were involved. The horrors of its battles and sieges have often been painted. Among the direct causes of the war--the great general cause being the standing antagonism between Catholics and Protestants--was a clause in the Peace of Augsburg (1555) which remained a source of friction. It provided that any ecclesiastical prince who became Protestant must surrender the lands as well as the authority of his office. In many instances this clause was disregarded by the Protestants, who from the first felt it to be unjust. Until the accession of Rudolph II (1576) as Emperor of the Holy Roman Empire, there was no imperial intolerance, and Protestantism rapidly spread. But the harsh dealings of Rudolph with the Protestants provoked resentment. In 1607 Donauworth, a free Protestant city, was seized by the Catholic Duke of Bavaria. Next year the German Protestants formed the defensive Evangelical Union. Meanwhile Rudolph's policy only reacted in favor of the Protestant nobles. In 1611 his brother Matthias supplanted him as King of Bohemia, and in 1612 Rudolph died and Matthias succeeded to the imperial throne.