PREFACE.

CONTENTS.

LECTURE I.

LECTURE II.

LECTURE III.

VENTILATION.

FOOTNOTES.

LECTURES ON VENTILATION:

BEING A COURSE DELIVERED IN THE
FRANKLIN INSTITUTE,
OF PHILADELPHIA,
DURING THE WINTER OF 1866-67.

By LEWIS W. LEEDS,

Special Agent of the Quartermaster-General, for the Ventilation of Government Hospitals during the War; and Consulting Engineer of Ventilation and Heating for the U. S. Treasury Department.

Man's own breath is his greatest enemy.

NEW YORK:
JOHN WILEY & SON, PUBLISHERS,
2 Clinton Hall, Astor Place.
1869.

Entered according to Act of Congress, in the year 1868, by
LEWIS W. LEEDS,
In the Clerk's Office of the District Court of the United States for the Southern District of New York.

New York Printing Company,
81, 83, and 85 Centre Street,
New York.