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POPULAR SCIENCE 369<br />
Stern of a Moti.)r Boat.<br />
Latest devices for propulsion and steering of swift crafl.<br />
Strung in chains and are ready for the<br />
adornment of the maker or purchaser.<br />
The fad in southern Cahfornia has attained<br />
really amazing proportions,<br />
strings of the rose beads selling at anywhere<br />
from $2.50 to $10, depending upon<br />
their length and their elaboration.<br />
Much of the attractiveness of the rose<br />
beads is due to the faint suggestion of the<br />
perfume of roses that remains with them.<br />
Unfortunately many of the California<br />
roses are ordorless. To remedy the deficiency,<br />
it is customary to mix a drop<br />
or two of attar of roses with the pulp<br />
before molding it into beads.<br />
There is no good reason why this attractive<br />
and pleasing fad should remain<br />
a monopoly of the women of California.<br />
The manufacture of the rose beads is<br />
neither complicated nor difficult, and can<br />
be practiced wherever roses grow.<br />
bottom to counteract the tendency of the<br />
bow to rise in the air when running at<br />
full speed and thus prevent "squatting"<br />
which is common to racing motor boats.<br />
The shaft of each of the twin propellers<br />
is connected to a twelve-cylinder, 400-<br />
horsepower gasoline engine built by the<br />
English firm of Wolseley. The exhaust<br />
ports for the two engines can be seen at<br />
the water line on the transom of the<br />
stern. It will be noticed that the propellers<br />
have great pitch and strength and<br />
are hung well below the hull so that they<br />
will disturb the surface of the water as<br />
little as possible. The shafts are journaled<br />
at the apex of broad, substantial<br />
brackets bolted to the hull and presenting<br />
very thin edges to the water in the longitudinal<br />
axis of the hull. The effort required<br />
to turn the rudder when the boat<br />
is running at full speed is very great, so<br />
that it was necessary to provide the substantial<br />
casting and steel cables shown<br />
at the top of the rudder. The Ursula<br />
belongs to the Duke of Westminster and<br />
carried the Union Jack in the races.<br />
STERN OF A MOTOR BOAT<br />
pOWER and speed are typified in the<br />
accompanying photograph of the<br />
stern of the racing motor boat Ursula,<br />
which won the Cup of Nations one-hundred<br />
kilometer race in the Mediterranean<br />
off Monte Carlo last April at an average<br />
speed of 42.83 miles an hour. The stern<br />
of the hull is made broad and flat on the<br />
Nkw International Gate\va\.<br />
The new international bridge across the Rio Grande, connecting<br />
Brownsville. Texas, and Matamoros. Mexico.<br />
is now open for traffic bi-twt. Louis.<br />
Brownsville & Mexico Railroad and the<br />
National Railways of Mexico. It cost<br />
approximately $1,250,000.
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