of the magnet disclosed.

To Find the Day of the Week for any Year.--A new method devised
by Lewis Carroll.


VII. NAVAL ENGINEERING.--Some Recent High Speed Twin
Screws.--By E.A. LINNINGTON.--An important paper on the subject
of screw propulsion.--6 illustrations.

The Havre Maritime Exhibition.--Notes on the recently opened
exhibition of ships and naval appliances at Havre.--1 illustration.

The New German Corvette Greif.--A recent addition to the German
fleet illustrated and described.--1 illustration.

The Steamship Great Eastern.--A plea for the mammoth
steamer.--Probabilities of her future usefulness.

Twin Screw Torpedo Boat.--The new sea-going vessel built by
Yarrow & Co. for the Italian government.--Her extraordinary
speed.


VIII. ORDNANCE.--Our Coast Defenses.--An interesting summary
by Gen. H.L. ABBOTT of our means for defending our coasts.

The New Krupp Guns.--The dimensions of the largest guns in
the world, now in process of construction at Essen.--2 illustrations.