The Pearsall Brothers have one in Detroit, Mich., and another in Chicago, Ill. The large Zouave Hall in Chicago, under the direction of Geo. D. Miles, has become a noted velocipede academy. The Nicholson pavement, much used in Chicago, is admirably adapted to this kind of propulsion, and the riders soon leave the rinks for the streets. Chicago hails any invention of a fast nature, and the velocipede has already become a practical institution there. There is no place where the velocipede _furore_ has developed more rapidly or to a greater extent than in Boston. There are over twenty schools and rinks in the city; and no less than eleven on Washington Street, between the Old South Church and Chester Square. The first school in Boston was opened by S. T. Derry of the firm of Wm. H. Sargent & Co., at 155 Tremont Street. At this school the course of instruction is thorough and complete, and all pupils graduate experts. Six different sizes of French pattern velocipedes are used, and the scholar is advanced from one to the other, according to progress. Though this is a private school, there are the names of hundreds of graduates upon its lists. Mr. Derry is an accomplished teacher. He has several other schools under his charge, and has made arrangements to lease the Skating Rink for the same purpose. The first public rink opened in Boston, was near Bowdoin Square (No. 7 Greene Street), and has been deservedly popular. The proprietors have had branch rinks in Cambridgeport, Brighton, and other neighboring towns. The fashionable Horticultural Hall was transformed into a first-class velocipede academy for a limited time. This academy was provided with coat rooms, dressing rooms, and other conveniences; and with seats and accommodations for ladies. Tournaments and races here followed each other in rapid succession. Among the other popular rinks in Boston, are those of Kimball Brothers, 113 Court Street; Walter Brown, 179 Court Street; Horace M. Sargent, Boylston Hall; Macy & Butler, 90 and 92 Tremont Street; at 334 Washington Street; at Arlington Hall; and at Riddle’s Carriage Repository, Haymarket Square.