Several other appliances were shown at the Westminster Aquarium on April
13, but the two rafts we have selected for illustration will give a
sufficiently correct idea of the general principles upon which the
apparatus is based.--_Industries._

* * * * *




ANOTHER REMARKABLE TORPEDO BOAT--OVER TWENTY-EIGHT MILES AN HOUR.

In a recent impression we gave some particulars of the trial trip of a
boat built for the Italian government by Messrs. Yarrow & Co., which
attained the highest speed known, namely, as nearly as possible, 28 miles
an hour. On the 14th April the sister boat made her trial trip in the
Lower Hope, beating all previous performances, and attaining a mean speed
of 25.101 knots, or over 28 miles an hour. The quickest run made with the
tide was at the rate of 27.272 knots, or 31.44 miles per hour, past the
shore. This is a wonderful performance.

In the following table we give the precise results:

+-------+---------+-------+-----+-------+-------+-------+
| | | | | | | Second|
|Boiler.|Receiver.|Vacuum.|Revs.| Speed.| Means.| Means.|
+-------+---------+-------+-----+-------+-------+-------+
| | | | per | Knots | Knots | Knots |
| lb. | lb. | in. | min.|per hr.|per hr.|per hr.|
+-------+---------+-------+-----+-------+-------+-------+