POPULAR FALLACIES

BY

A. S. E. ACKERMANN

B.Sc.(Engineering), Lond.

CONSULTING ENGINEER; ASSOCIATE OF THE CITY AND GUILDS OF LONDON
INSTITUTE; ASSOCIATE MEMBER OF THE INSTITUTION OF CIVIL
ENGINEERS; MEMBER OF THE ROYAL SANITARY INSTITUTE;

SECRETARY OF THE SOCIETY OF ENGINEERS; AUTHOR

OF "COAL-CUTTING BY MACHINERY IN AMERICA

MY C

WITH EIGHT FULL PAGE PLATES

7615

PHILADELPHIA

J. B. LIPPINCOTT COMPANY

LONDON: CASSELL AND COMPANY, LIMITED

1908

AG

105 ¡A2

67807

To my Fatber

WHO EARLY TAUGHT ME BY PRECEPT

AND EXAMPLE THE HABITS OF A STUDENT-LIFE

WHICH IS ONE OF THE HAPPIEST IT

IS POSSIBLE TO LIVE