Chapter XIII: NAVAL ENGINEERING.--A Twin Screw Launch Run by a Compound

Engine.--The application of a single compound tandem
engine to driving twin screws.--2 illustrations.

Improvements in the Construction of River and Canal
Barges.--By M. RITTER.--A very peculiar and ingenious system of
construction, enabling the same vessel to be used at greater or
less draught according to the requirements and conditions of the
water.--5 illustrations.

Reefing Sails from the Deck--An effective method of reefing,
one which has been subjected to actual trial repeatedly in bad
weather off Cape Horn.--3 illustrations.