BOY AVIATORS' SERIES
   By Captain Wilbur Lawton
   Absolutely Modern Stories for Boys
   Cloth Bound, Price, 50c per volume
   THE BOY AVIATORS ON SECRET SERVICE
   Or, Working With Wireless
     In this live-wire narrative of peril and adventure, laid in the  Everglades of Florida, the spunky Chester Boys and their interesting  chums, including Ben Stubbs, the maroon, encounter exciting  experiences on Uncle Sam's service in a novel field. One must read  this vivid, enthralling story of incident, hardship and pluck to get  an idea of the almost limitless possibilities of the two greatest  inventions of modern times--the aeroplane and wireless telegraphy.  While gripping and holding the reader's breathless attention from  the opening words to the finish, this swift-moving story is at the  same time instructive and uplifting. As those readers who have  already made friends with Frank and Harry Chester and their "bunch"  know, there are few difficulties, no matter how insurmountable they  may seem at first blush, that these up-to-date gritty youths cannot  overcome with flying colors. A clean-cut, real boys' book of high  voltage.
   Sold by Booksellers Everywhere
   HURST & CO.--Publishers--NEW YORK