DEEP-SEA EXPLORATION. 
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wliicli pass through stulTnig-hoxes in the lieads ot tlie cylinder. To the top ot the 
coils is screwed an air-injector a, which is supplied witli steam at b and air at c, 
the velocity of the steam inducing the air current; the steam and air thus entering, 
molecule to molecule, are thoroughly mixed before condensation. The current of sea- 
water, forced into the condenser at d, passing out at c, keeps the surfaces of iiie 
coils cool, condensing the steam within. The fresh water and air rush out of the 
coils at /'and into a lilter of animal cluircoal, from which it is delivered to the ship’s 
tanks through the oitening //. The fresh water will absorb (dissolve) oidy a small 
portion of air (less than 2^ per cent of the volume under pressure of the atmosphere), 
but the large excess of air injected into the steam serves to oxidize organic matter 
which is brought over by it, and this especial iilter is to remove those oxides. The 
object of the annular jet of steam is to bring a larger surface of steam-jet in contact 
with the air, and the object of the annular condenser is to compel the circulating- 
water to How over the condensing surface. The filtering material requires to be 
rene\ved about once in two years. The commercial size of the machine is ISTo. 4, and 
