ON rHE KOVTNG SIDEWALK CCBIOUS SENSATIONS AND SIGHTS ON A NEW PARISIAN INSTITUTION. Paris correspondence of The London News. On uj e south side of the river the Exposition buildir:^ stand upon three sides of what in London would be called a square. Trapezium would be the right word, lit square is the more popular. The longest side, ensuring three noarters of i. m:it; and containing the Avenue of the Nations, is formed by the river. The xjpxt longest ;s formal by the Champ >• Mars Palaces, and the third and shortest by the Palace of the Invalides section. The fourth side open to the city, is iKiunded by the Ave nse d«* 5a Motte Piequet. It is obvious that under ordinary circumstances a visitor intending to ■nass. sa>\ from the Invaiides to the Champ de ilars must, without ppeciaiiy contrived means o f communication, traverse a large block of s tree'- s . jvi-nufs and boulevards. The rolling platform, "trottoir mutant," Ifl the special con trrvanc«. It is not a detached structure like a nilway train, arriving at and passing certain points at stated times. In the "trottoir rou lanf there Ea no break. - In. engineers' language, it is an -endless" floor. The "trottoir rou lant" is a narrow ribbon of a finer raised thirty feet above the level of ib* ground, ever and ever glidinz along the four sides of the .are — a wooden serpent with its tail in its mouth. . The roping platform is about two and a quurt?r miies in length. There are ten entries to it and as many exits from it. distributed over ;h«- river face, aiung the Champ de Mars and the Lovailde*. It never slops for passen gers; you step ■ to it or off ;t as you do on or off a London 'bus in motion, but with the Important difference that the rolling platform is only two inches above the level of your shoe Boles.'.and that its rate of motion is slower. As U isms '-iiu corners of the huge trapezium, or D ■verves r:ghtward or leftward at seme point on one of its sides, its moti'm resembles the Bnnous -rawl of a snake- Thirty feet overhead, supported upon a forest of scaffolding, are laid the st?ai rails ' upon which revolve the dwarf whet-Is of the "trottoir roulant." Upon the two and a quarter msies are ongregated tiro and a quarter miles of more or '.ess idly curious humanity — a ribbon of humanity, a? a French journalist calls it. Mul titudes of Parisians, provincials, Americans, cockneys, Germans, but principally the first two, glide overhead on the back of this sinuous monster. I*, is odd to witness, when a shower cot.-'s. the sudden shiny apparition of the long r:;jao'i of umbrellas. The monswr'a voice Bounds unceasingly the day '-one, and half the n - • >orr.eiimes it resembles the din made by the ds >f twenty million Broiidir.gnagian ket tle from which the steam :s escaping, some s the roll of the massed drums of the entire F :. :i army. At other times it concentrates Itself .:: a high pitched, fierce iron screech. How ri.vs ih:s infernal mutterirg. groaning, _- • .r.g. rattling, screeching affect the dwellers of the Avenue de ia Bourdonnais. the Avenue ■2- !a Motte Piequet; the Rue Fabert, in front nt whose third story windows the "trottoir" rolls pn-st with its load of humanity? In London, where peojil*? make a fus3 about organ grinders and the tambourine girls of ihe Salvation Army, It would. I fancy, cause an insurrection. But I have h**ard u« m New York May 11, 1201. For farther particulars, rates, etc, address T=r a i^r m 1 t-t <-^- a itr %-t Ttr? a -rvr t .t^jt-f^ 3*7 Broad-way, New "STc^arlx- Here Are T h re c Notable NNewe c w Novels. UNLEAVENED BREAD By ROBERT GRANT. I2mo, $1.50. ft n^HE contrast between Seima s words and her character is profound. Mr. Grant 1 exploits :t with merciless industry. He leaves no foible untouched, no secret unrevealed. At the end of the book Selma, though still unconscious that her life has been despotically egotistical and ruthless, is presented to the reader with no humiliating line in her portrait missing ; she is the shallow, selfish woman in apotheosis. . . . Not only Selma, but the three men she successively marrirs, and the other types included are all realized with force : they seem taken bodU) from actual life." — Neve York Tribune. THE TOUCHSTONE By EDITH WHARTON. i2mo $1.25. who tasted the tine literary flavor of Mrs. Whartons The Greater 1 Inclination' a year ago will not be surprised to learn that ' The Touchstone' is a work of rare distinction. The novel places its author at once in the highest class of living artists in words. It is fine cf texture, perfect in its unity and dramatic sequence, and as remarkable for its grasp and :ts :nsight into human character as for its easy mastery of language. . . . The Touchstone ':s no ordinary novel. It is a short book and can be read in an evemrg. but it will be strange if it does not find a host of enthusiastic friends among those who appreciate genuine literary art." — Chicago Tribune. THE GRIP OF HONOR A Story of Paul Jones and the American Revolution. By CYRUS TOWNSEND BRADY. Illustrated. 12mo, $1.50. k4 TNTENSHLY stirring descriptions of sea fights, n vivid account of the desperate 1 encounter between the Bonhomme Richard and the Serapis, and the graphic portrayal of the conflicting emotions which assail a young Irishman righting ior the American flag, who is asked to choose between love and honors, and the ignominious death of a spy and traitor, constitute some of the elements in this highly stirring romance. The development of the stcry is natural and the setting given it is realistic, it is one of the most thrilling ot American historical novels." — Bdli:mors Herald. CHARLES SCRIBXER'S SONS. Publishers. 450 Feet Long.) The unqualified suc cess met with by the Annual Summer Cruises of the Hamburg-Ameri can Line to the Land of s