= 10 " about.
------------

R. 33.--At 60 miles per hour.
Fuel consumption
14.25 tons + 10.68 tons additional = 24.93 tons.

Lift available for fuel and freight = 21.5 tons.
Fuel carried = 24.93 "
------------
Minus balance = 3. 43 "
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At 45 miles per hour.
Fuel consumption
9.66 tons + 7.23 tons (17 tons approx.)

Lift available for fuel and freight = 21.5 tons.
Fuel carried = 17 "
------------
Balance for freight = 4.5 "
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R. 38.-Estimated only. At 60 miles per hour.
Fuel consumption
20 tons + 15 tons additional = 35 tons.

Lift available for fuel and freight = 42 tons.
Fuel carried = 35 "
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Balance for freight = 7 "
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At 45 miles per hour.
Fuel consumption 12 tons + 9 tons additional = 21 tons.

Lift available for fuel and freight = 42 "
Fuel carried = 21 "
------------
Balance for freight = 21 "
------------

It will thus be seen that at the faster speed small commercial loads
can be carried by L 70 and R 38 and not at all in the case of R 33,
that is assuming, of course, that the extra fuel is carried, of which
75 per cent of the total does not appear at all excessive in view of
the weather continually experienced over the Atlantic.

At the cruising speed the loads naturally increase but still, in L 70,
and more particularly in R 33, they are too small to be considered
commercially. In R 38, however, the load that can be carried at
cruising speed is sufficient to become a commercial proposition.

From this short statement it is evident that, by a comparatively small
increase in volume, the lifting capacity of an airship is enormously
increased, a