IN A SUBMARINE.

Press, Volume LIV, Issue 16225, 4 July 1918, Page 2

IN A SUBMARINE.

THE FRESH AIR PROBLEM. An interesting personal experience was given by Dr. M. Louisson, in evidence in tho heating appliances appeal at the Magistrate's Court yesterday, relative to tho maintenance of the purity of air in. submarines. Tho bearing that I>r. Louisson-s experience had on the case was in demonstrating that movement is one important essential in securing purity of air. Mr Alpers asked tho witness if, whilst on tho staff of a hospital ship, he had an experience bearing on the matters raised in tho present case. Br, Lonis.son stated that he went on board a submarine at Malta, and saw a lot of gas cylinders on the wharf. Ho was interested to know how a submarine could remain under water for 12 hours and how the crew got oxygen. The commander, iu reply, told him that they simply breathed the air in tho chamber over and over again: they had no fresh air pumped in. He (witness) referred to the cylinders ho had seen on the wharf, and tho commander told him that they were taken on board for the purpose of forcing the water out when coming to the surface. Experiments had been tried by allowing fresh oxygen into the chamber, but it only produced bad effects bv causing extra pressure on tho lungs. 'They were able, by simply keeping a . fan goine. to remain in the chamber breathing the same air for 12 hours.