Mean pressure in cylinders, inter.| 31.49| 30.82| 30.17| 28.38|
Mean pressure in cylinders, low | 11.68| 12.4 | 12.85| 12.32|
Indicated horse power each engine | 3631.42| 3589.07| 3721.37| 3583.50|
Total | 7220.39 | 7304.88 |
Collectively | 14525.37 |

As will be seen, the collective power exceeds the contract power under
natural draught by 1,525.37 horses, and was obtained with less than
the Admiralty limit of air pressure. The coal used on the occasion was
Harris' deep navigation, but no account was taken of the amount
consumed. Four runs were made on the measured mile with and against
the tide, the mean of means disclosing a speed of 19.12 knots. The
average speed of the seven hours' steaming, as measured by patent log,
was 19.28 knots. This fell short by over three-quarters of a knot of
what was anticipated in proportion to the power indicated by the
engines. Up to the limit of air pressure used the boilers answered
admirably.

* * * * *




HINTS TO SHIPMASTERS.


A Master in charge of a tramp steamer in these days _must_, if he
wishes for any comfort in life, take good care of himself, for the
pressure and hurry which is inseparable from his position, combined
with the responsibilities and anxieties of his calling, put a very