Explaining the Molding in Concrete of Various Styles of Bath Tubs, Laundry Trays, etc., with Easily Constructed Molds for the purpose. The Molding of Aquariums and Natatoriums, as well as the Water-proofing Methods used for same, are fully treated
BY
A. A. HOUGHTON
16 FULL PAGE ILLUSTRATIONS
New York
THE NORMAN W. HENLEY PUBLISHING CO.
London
E. & F. N. SPON, Ltd., 57 HAYMARKET
1911
[No. 39.—The S. & C. Series. Price 1/6 net.]
NATURAL STABILITY
AND
THE PARACHUTE PRINCIPLE
IN
AEROPLANES
BY
W. LeMAITRE