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APPENDIX. 
into operation, in order to make it as extensively useful as 
l^ossible for the health and comfort of the crews. 
2. The principal arrangement is to be placed under the charge 
of the surgeon of each vessel, who is to follow the rules and 
suggestions contained in Dr. Reid's valuable paper, and is to 
apply to the commander, to appoint a competent individual to 
instruct under his directions a sufficient number of persons for 
the management of the various valves and slides of the venti- 
lating tubes. These should be numbered to insure an effective 
and easy adjustment. Odd numbers on the starboard, and even 
numbers on the port side, beginning from aft, is the plan adopted 
in the * Albert.’ The persons having charge of the different 
sections of the vessel should be fully instructed to report any 
apparent increase or diminution in the ventilation of the com- 
partments under their charge. 
3. The ventilation should be practised frequently, even when 
its beneficial effect is not required, and as many persons as 
possible should be encouraged to learn the principle upon which 
it acts, by putting into operation the various movements. 
4. The powers of the fanners ought to be tested. 
1st. In producing a circulation of air introduced into the 
vessel, directly from the external atmosphere. 
2nd. In propelling the heated air of the engine-room into 
the hold and various compartments, as first practised in 
the ‘ Wilberforce.’ 
3rd. As connected with the medicator or purificator. 
4th. In connection with the tubular heating apparatus 
attached to the purificator, or simply connected with the 
external tube leading to the fanner. 
V. — The commanders are to direct the surgeons to send reports 
to them in writing from time to time, showing the results of 
the trials of the ventilation, and these reports are to be carefully 
preserved. 
VI. — 1. Dr. Reid’s General Rule, No. 2, is not only to be 
strictly attended to every day, but one hold is also to be examined 
daily by the surgeon, (excepting on Sunday) and the state of the 
air reported to the commander, in order that every compartment 
ma}^ come under particular inspection during the week. 
