Turnor[285] kept the wood; but Sir D. Brewster[286] brought away a bit of root in 1814, and must have had it on his conscience for 43 years that he may have killed the tree. Kepler's suggestion of gravitation with the inverse distance, and Bouillaud's proposed substitution of the inverse square of the distance, are things which Newton knew better than his modern readers. I discovered two anagrams on his name, which are quite conclusive; the notion of gravitation was _not new_; but Newton _went on_. Some wandering spirit, probably whose business it was to resent any liberty taken with Newton's name, put into the head of a friend of mine _eighty-one_ anagrams on my own pair, some of which hit harder than any apple. {138} DE MORGAN ANAGRAMS. This friend, whom I must not name, has since made it up to about 800 anagrams on my name, of which I have seen about 650. Two of them I have joined in the title-page: the reader may find the sense. A few of the others are personal remarks. "Great gun! do us a sum!" is a sneer at my pursuits: but, "Go! great sum! [Integral]a u^{n} du" is more dignified. "Sunt agro! gaudemus,"[287] is happy as applied to one of whom it may be said: "Ne'er out of town; 'tis such a horrid life; But duly sends his family and wife." "Adsum, nugator, suge!"[288] is addressed to a student who continues talking after the lecture has commenced: oh! the rascal! "Graduatus sum! nego"[289] applies to one who declined to subscribe for an M.A. degree. "Usage mounts guard" symbolizes a person of very fixed habits. "Gus! Gus! a mature don! August man! sure, god! And Gus must argue, O! Snug as mud to argue, Must argue on gauds. A mad rogue stung us. Gag a numerous stud Go! turn us! damage us! Tug us! O drag us! Amen. Grudge us! moan at us! {139} Daunt us! gag us more! Dog-ear us, man! gut us! D---- us! a rogue tugs!" are addressed to me by the circle-squarers; and, "O! Gus! tug a mean surd!" is smart upon my preference of an incommensurable value of [pi] to 3-1/5, or some such simple substitute. While, "Gus! Gus! at 'em a' round!" ought to be the backing of the scientific world to the author of the _Budget of Paradoxes_. The whole collection commenced existence in the head of a powerful mathematician during some sleepless nights. Seeing how large a number was practicable, he amused himself by inventing a digested plan of finding more. Is there any one whose name cannot be twisted into either praise or satire? I have had given to me, "Thomas Babington Macaulay Mouths big: a Cantab anomaly." NEWTON'S DE MUNDI SYSTEMATE LIBER. A treatise of the system of the world. By Sir Isaac Newton. Translated into English. London, 1728, 8vo.