These books describe, with interesting detail, the experiences of a party of boys among the mountain pines. They teach the young reader how to protect himself against the elements, what to do and what to avoid, and above all to become self-reliant and manly. _12mo. Cloth_ _50c per volume, postpaid_ THE NEW YORK BOOK COMPANY 201 EAST 12th STREET NEW YORK THE HILLTOP BOYS SERIES By CYRIL BURLEIGH =The Hilltop Boys; A Story of School Life= Jack Sheldon, a clean-minded and popular student in the academy, gains the enmity of several of the boys, but their efforts to injure him fail. A mystery, connected with Jack's earlier life, is used against him, but he comes off with flying colors. =The Hilltop Boys in Camp; or, The Rebellion at the Academy= A strange situation arises in which an airship figures as the bearer of an important letter. The head-master acts without investigating all the facts, but matters are all finally adjusted to the satisfaction of all concerned. =The Hilltop Boys on Lost Island; or, An Unusual Adventure= The scene now shifts to the West Indies and Jack figures as the hero of a daring rescue. Their experiences in tropical waters form a most stirring narrative, and the young reader is assured of a tale of gripping interest from first to last. =The Hilltop Boys on the River; or, The Cruise Up the Hudson= The Doctor takes a number of the boys on a cruise up the Hudson. An unlooked-for incident finds Jack Sheldon equal to the occasion, and what at one time promised to be a disastrous trip for all concerned was turned into a complete victory for our young friends. =The Hilltop Boys Doing Their Bit; or, The Young Farmers of the Highlands= Our young friends, fired with patriotism, prove their real worth to the community, and their efforts meet with unexpected success. _12mo. Cloth_ _50c per Volume_ THE NEW YORK BOOK COMPANY NEW YORK THE BOY VOLUNTEERS SERIES By KENNETH WARD _12mo. Cloth. Fully Illustrated_ _50c per Volume_ THE NEWEST BOYS' BOOKS ON THE EUROPEAN WAR, RELATING THE ADVENTURES OF TWO AMERICAN BOYS AND THEIR EXPERIENCES IN BATTLE AT SEA AND ON AIR SCOUT DUTY. ALL PROFUSELY ILLUSTRATED WITH AUTHENTIC DRAWINGS. =The Boy Volunteers on the Belgian Front= Describes the adventures of two American boys who were in Europe when the great war commenced. Their enlistment with Belgian troops and their remarkable experiences are based upon actual occurrences and the book is replete with line drawings of fighting machines, air planes and maps of places where the most important battles took place and of other matters of interest. =The Boy Volunteers with the French Airmen=