Before many weeks had gone by there were several wells being put down, and the Pontico Hills region began to have a very oily smell, that sometimes could be detected away down in Chester when the breeze was favorable. And Miss Priscilla urged Jack and his chums to accept a generous present from her, with more to follow as time developed the value of the new discovery, which their timely assistance had saved from falling into the hands of the unscrupulous Mr. Maurice. During the balance of the summer vacation Jack and Toby and Steve enjoyed many little outings that afforded them considerable profit in the way of information, as well as pleasure. Like most of the other boys of Chester, however, they were head and ears interested in the progress of the new building that was being erected, and which when completed would be used as a gymnasium, where they could have the time of their lives amidst such appurtenances as go to make up a first-class physical culture department. With the first breath of Autumn, and the taking up of school duties came the long anticipated season of outdoor Fall sports. The sound of the "punk" of the football kicked hither and thither over the green sward told what was in the wind. And the title of our next story will explain how those boys of Chester were eager to win more victories for their home town. You will find it all set down in the pages of "Jack Winters' Gridiron Chums; or When the Halfback Saved the Day." THE END BOYS BANNER SERIES A desirable assortment of books for boys, by standard and favorite authors. Each title is complete and unabridged. Printed on a good quality of paper from large, clear type. Beautifully bound in cloth. Each book is wrapped in a special multi-colored jacket. 1. Afloat on the Flood Leslie 2. At Whispering Pine Lodge Leslie 3. Chums of the Campfire Leslie 4. In School and Out Optic 5. Jack Winter's Baseball Team Overton 6. Jack Winter's Campmates Overton 7. Jack Winter's Gridiron Chums Overton 8. Jack Winter's Iceboat Wonder Overton 9. Little by Little Optic 10. Motor Boat Boys' Mississippi Cruise Arundel 11. Now or Never Optic 12. Phil Bradley's Mountain Boys Boone 13. Phil Bradley's Winning Way Boone 14. Radio Boys' Cronies Whipple 15. Radio Boys Loyalty Whipple 16. Rivals of the Trail Leslie 17. Trip Around the Word in a Flying Machine Verne 18. Two years Before the Mast Dana For Sale by all Book-sellers, or sent postpaid on receipt of 40 cents M. A. DONOHUE & COMPANY 711 SOUTH DEARBORN STREET, CHICAGO BOY INVENTORS' SERIES