very large. During the past ten years the price of old rubber shoes
has ranged between $60 and $120 per ton in carload lots, being at
present about $90 per ton. Some 1,500 tons of rubber scrap are
imported annually by the reclaiming companies in the United States.

* * * * *

In the Baltic Sea there are more wrecks than in any other place in the
world. The average throughout the year is one each day.

* * * * *




ENGINEERING NOTES.


THE AUSTRIAN government has ordered thirty-seven engines arranged to
burn kerosene, for use in the Arlberg tunnel, in which lack of proper
ventilation at present causes the tunnel to remain filled with
smoke.--Uhland's Wochenschrift.

One of the first essentials to modern military enterprise is the
establishment of a military railway system for war purposes. To be in
a position to carry out efficiently and speedily what we may expect to
be called upon to do on the outbreak of serious war, previous
preparation in time of peace is an absolute requisite. In connection
with General Sherman's operations in Georgia, during the American
civil war, an army was supplied for six and a half months over a line