203. In vessels partially armed with shell-guns, the best place, perhaps, for these rooms is immediately forward of the spirit-room, but not communicating with it; and in those armed entirely with such guns, the additional shell-rooms necessary may be, perhaps, more conveniently placed abaft, and adjoining the delivering-passage of the forward magazine, than elsewhere.
204. With the introduction of rifled cannon, and various special projectiles, it is essential to devote more care to the stowage of shells, in order to avoid confusion in battle. Not only each kind and calibre, but each length of fuze, is to be stowed in separate tiers.
DAMPNESS OF MAGAZINES AND SHELL-ROOMS.
205. Sponge clipped in a solution of salt water, dried and weighed, is a means of ascertaining if dampness exists in these places. If it become heavier, the room is damp.
VENTILATION.
206. Provision must be made, by means of grating-hatches, for sufficient ventilation in action, to supply the magazine-men with fresh air, and allow the dampness caused by perspiration to pass off; and fan-blowers are to be fitted to increase the supply of fresh air, and assist the ventilation. The magazine should be opened and aired, at least once a fortnight, for a few hours, on bright, clear days.
C.K. Stellwagen, del. Lith. by J.F. Gedney, Washn.
C.K. Stellwagen, del. Lith. by J.F. Gedney, Washn.