And so the invitations were accepted—all, that is, except two, and they were two very old people, and the preparations were duly made, and 8.30 p.m. saw a crowd of fifteen young gentlemen in Sam Browne belts collected in Raymond’s room, drinking their liqueurs and smoking their cigars with the air of war-worn warriors. There was a certain amount of noise in the room as well, in fact it filled up most of the odd spaces where the aforesaid young gentlemen were not sitting, but matters were moving, and a ‘submarine attack’ was developing.

Boyd was dangling in mid-air from the end of a line thrown round a stout hat-peg and made fast to the bed rail (he had to be the periscope after all), and an arrangement of chairs and whatnots represented the diving rudder wheels and other control-room etceteras. A little way off Seagrave stood by an arm-chair, to whose back was fixed an ingenious arrangement, whose principal ingredients were pillows and a length of rubber tubing. The spectators sat where they could, and prepared to learn the methods of attack as demonstrated by a submarine expert.

At an order from Raymond, a young gentleman with a single star upon his cuff went through the operation of starting the motors, mimicking the gestures of the L.T.O. working the switches at the motor-board. The captain then gazed fixedly between Boyd’s dangling boots and gave the order, ‘take her down.’

Everybody groaned, hissed, and hooted, while a youth in shirt sleeves splashed water in a basin to represent the wash of the sea over the conning-tower. Two others manipulated the diving wheel chairs, and the hands on the face of a broken clock were gravely moved on in imitation of the depth-gauge.

‘A thousand feet,’ said Raymond. ‘Hold her at that, idiot. Oh, hell, she’s leaking.’ This as the basin worker upset half his water. ‘Blow 40 and 50. Shake it up now. That’s better. Oh, down, periscope,’ and Boyd was lowered to the floor gasping.

‘Right now, up to thirty feet. Work that depth-gauge, ass. Up periscope. Heave him up, never mind if he kicks. Ha! Enemy bearing two points on the starboard bow. Steady that helm, idiot. Steady, I say. That’s right. Eighteen feet. Flood the tubes.’

‘Flood the tubes,’ cried Seagrave, getting busy with his arm-chair. ‘Come on now. Bear a hand there. Tubes flooded, sir, and firing-tanks charged. Swing the bow-cap.’ (Another youth shot through air.) ‘That’s the style. Now we’re doing something. All ready, sir.’

‘Steady the helm. Down periscope. Thirty feet,’ continued Raymond. ‘Easy now, eighteen feet again. Up periscope. Steady that helm now. Carefully does it. Ahhhh. Don’t kick us, Boyd. Stand by.’

‘Stand by, sir.’

‘Easy now. Ready to take her down. Deflections 400. Look out there; look out again and we bump her. Now once more and ... Fire!’ and a pillow shot out of the catapult device like a feathery cannon ball and bowled over a rather dignified if youthful captain amid howls of delight.