4 MARCH 1899, Page 15

EUCLID AND HIS MODERN RIVALS.

[To THF EDITOR OF THE "SPCCTATOR."1 SIR,—When the Spectator styles Mr. Dodgson's "Euclid and his Modern Rivals" "the most humorous book ever written on any subject within the whole province of mathematics," has it not forgotten Augustus de Morgan's "Budget of Para. domes," surely one of the most humorous books ever written on any subject? My quotation is from the Spectator of January 7th in a notice of "Lewis Carroll's " Life.—I am,