At about the time when Harvey made known his discovery Bacon was publishing his views of the laws of transmission and reflection of sound. Great man as he was, with a keen foresight into the value of the recent inventions of the compass, gun-powder and printing, he nevertheless was himself so narrow, in some respects, that he placed but little value upon the discovery of Copernicus. He, however, paved the way for one in some respects still greater, namely Isaac Newton, who, however, had scarcely attained man's stature when Harvey died. How much we owe to the two great Bacons of history one cannot indicate in this short résumé. Roger Bacon (1214-1292) seems to have been the first great thinker along truly scientific lines. He was more than a mere chemist while, as White says, more than three centuries before Francis Bacon _advocated_ the experimental method Roger Bacon had _practised_ it, and in many directions. He did more than anyone else in the middle ages to direct thought into fruitful paths, and only now are we finding out how nearly he reached some of the principal doctrines of modern philosophy and chemistry. Most important of all, his methods were even greater than his results, and this at a time when "theological subtilizing" was the only passport to reputation for scholarship. It was Avicenna, the Arabian, who perhaps first announced substantially the modern theory of geology, accounting for changes in the earth's surface by suggesting a stone-making force, but the presence of fossils in the rocks had been always a thorn in the sides of the theologians. It was Leonardo da Vinci, that versatile genius in science and art, who, previous to Harvey's generation, suggested true notions as to the origin of fossils, while, in Harvey's time, Bernard Palissy, another artist, vehemently contended for their correctness. Still, even at Harvey's death, neither geology nor paleontology had come anywhere near scientific accuracy. The _Academia dei Lyncei_, so-called from its seal, which bore the image of a fox, was founded in Rome in 1603. In France The Academy of Science was not founded until 1665, in Germany The Society of Naturalists and Physicians in 1652, and the British Royal Society in 1665.