The author knows these subjects from a practical standpoint. Each bookis printed from new plates on a good quality of paper and bound incloth. Each book wrapped in a jacket printed in colors.
Price 60c each
1 -- Boy Inventors' Wireless Triumph 2 -- Boy Inventors' and the Vanishing Sun 3 -- Boy Inventors' Diving Torpedo Set 4 -- Boy Inventors' Flying Ship 5 -- Boy Inventors' Electric Ship 6 -- Boy Inventors' Radio Telephone
The "How-to-do-it" Books
These books teach the use of tools; how to sharpen them; to design andlayout work. Printed from new plates and bound in cloth. Profuselyillustrated. Each book is wrapped in a printed jacket.
Price $1.00 each
1 -- Carpentry for Boys 2 -- Electricity for Boys 3 -- Practical Mechanics for Boys
For Sale by all Book-sellers, or sent postpaid on receipt of the aboveprice.