Hours.       Revolutions.    Steam.       Power.
1st hour        86.86      120.6       13,568
2d   "          89.26      128.0       15,298
3d   "          88.55      125.0       14,251
4th  "          89.58      127.6       14,759
5th  "          89.40      125.0       14,394
6th  "          89.55      125.0       14,512
7th  "          89.15      126.0       14,893

The trial was originally intended to continue for eight hours, but at the end of the seventh, as the light began to fade, and as, moreover, the engines were working with a smoothness and efficiency that showed no signs of flagging, it was considered expedient to terminate the run.

Steam pressure in boilers                                125.5  lb. 
Air pressure in stoke holds                                0.42 in. 
Revolutions per minute, starboard                         88.41
Revolutions per minute, port                              89.39

|     Starboard.   |      Port.      |
+---------+--------+--------+--------|
|  Forward|   Aft  | Forward|   Aft  |
Vacuum in condensers.             |    27.85|   27.85|   28.1 |   29.1 |
Mean pressure in cylinders, high  |    43.04|   38.95|   42.36|   42.45|
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 great strain upon him, and will, in time, unless he takes special care, have a serious effect on his health; this is more particularly the case with men of the nervous temperament.  It cannot be expected that in this age, when so many thousands of people on shore fail from overwork and “high pressure,” steamship masters, who as a class, are overworked and harrassed to a serious extent, should altogether escape.  Again, unless a shipmaster takes an interest in the health, comfort, and well-being of his crew, he, in the first place, neglects one of his duties, and, secondly, sows the seeds of discomfort and annoyance to himself.  Let us consider his duties to himself personally.