WILLIAM B. DURYEE, M.Sc.
Secretary of Agriculture,
State of New Jersey
WHITTLESEY HOUSE
McGRAW-HILL BOOK COMPANY, INC.
NEW YORK AND LONDON
1934
Copyright, 1934, by the Mcgraw-Hill Book Company, Inc.
All rights reserved. This book, or parts thereof, may not be
reproduced in any form without permission of the publishers.
THIRD PRINTING
PUBLISHED BY WHITTLESEY HOUSE
A division of the McGraw-Hill Book Company, Inc.
Printed in the United States of America by The Maple Press Co., York, Pa.
To my friend
Henry W. Jeffers