The brain of an Aristotle was needed to discern and grasp Keely's meaning, to interpret and define it. Dr. Brinton never touches a subject without throwing light upon it, and his penetrating mind perceived the ideas to be defined in all their relations. His keen logical acumen separated and classified them in their order, in a true, sound, and scientific manner. In the words of Sir James Crichton Browne, who heard Professor Brinton read this abstract in London, "Professor Brinton's synopsis is an able, lucid and logical paper." Now that such distinguished men are interesting themselves in Keely's discoveries, there is no longer any danger of their being lost to science; nor to commerce, if his life is spared. The action of Dr. Pepper (Provost of the University of Pennsylvania) in January, 1891, gave Keely all the protection that he then needed in order to continue his researches up to the completion of his system. Professor Dewar of the Royal Institution of Great Britain, whose Cambridge duties prevented him from keeping the engagement made for him to visit Mr. Keely's workshop in December, 1891, is now compelled to wait, until notified that Keely is in a position to demonstrate his theories, as it is desirable that he should not be interrupted in the critical work that is at present engrossing him, at times eighteen hours out of the twenty-four. But although Keely has not instructed anyone in his method of disintegrating water, to obtain the ether, which he uses as the medium of the polar force, he does not withhold the principle by which he obtains it. Sir John Herschell said, "There is a principle in the science of music that has yet to be discovered." Pythagoras taught that the principle which underlies the harmonies of music, underlies the motion of the heavenly bodies. It is this principle which Keely has discovered; but until he has utilized it in mechanics, he has nothing more to sell than Sir Isaac Newton had when he discovered gravity, as Professor Fitzgerald has said.