Now he turned south-east once more, crossed the Chandaur chain, and presently came in sight of the Godaveri river, which traverses the whole breadth of Hyderabad. Near Indor he left the river on his left. By this time it was becoming dark. Smith still slept, and Rodier, who was not able to steer by the stars, was considering whether he had not better waken his employer when he spied the characteristic glare from a locomotive furnace far ahead. In half-a-minute he had caught up the train, and slowed down to make sure of the direction in which the railway ran. He found that it was almost exactly south-south-east, and concluded from a glance at the map that he was above the connection of the Hyderabad railway running from Warangal to the coast of the Bay of Bengal. Reassured, he resolved to let Smith have his sleep out, followed the line until it swept eastward at Secunderabad, and then, steering a little to the left, put the engine once more to full speed. In less than an hour afterwards he saw a vast expanse of water glistening in the light of the rising moon, and knew that he had reached the sea.

Being by this time thoroughly stiff and tired, and knowing, moreover, that Smith would navigate the aeroplane over the sea with much more certainty than himself, he shouted to awaken him. This proving ineffectual, he leant over and nudged his shoulder. Smith was awake in an instant.

"Where are we?" he cried; but no answer was necessary; he saw the sea below him, and stretching far to the east, north, and south. He exchanged places with Rodier, who, too tired even to eat, fell asleep at once.

"Good thing he woke me," thought Smith. It was one thing to fly over land, with guiding marks in the shape of rivers, mountains, and other physical features that could be recognized more or less easily from the map; and quite another to cross the pathless ocean. But with a compass and a clear sky the course would present no difficulty to a seaman, and Smith settled down to a flight that would be without obstruction for at least seven hundred miles.

He knew that in the Bay of Bengal the prevailing wind at that season is south-westerly. Whether there was any wind or not it was impossible to ascertain while the aeroplane was maintaining its enormous speed; certainly there was none to cause unsteadiness. If wind there was, it blew in his, favour, and all that he would have to do would be to allow in steering for a slight northerly drift. He would certainly sight the Nicobar group, and possibly the Andaman Islands if he did not make sufficient allowance for the wind; but he was determined not to alight if he could help it until he arrived at Penang; he had lost time enough already.

It was the first time he had flown across so wide an expanse of sea, and he felt a touch of anxiety lest the engine should break down. If any accident should happen he had made up his mind that the only thing to be done was to don the lifebuoys, cut the engine loose, and trust to the buoys to keep them and the planes afloat until their plight was observed from some passing vessel. In the darkness this would, of course, prove a vain hope; even in daylight the chance that a vessel would be in sight was remote. But the die was cast: the engine was as yet working perfectly; and in three or four hours, all being well, he would come in sight of land.

There being no obstruction to fear, he kept at a height of only a hundred feet above sea level. The sea was calm, gleaming like a sheet of silver in the moonlight, so that the aeroplane seemed to fly over a continuous glistening track. Steadily it flew on; Smith had nothing to do but to sit still, feed the engine with petrol, and keep his eyes alternately on the compass and the stars.

At length, about six o'clock by his watch—past eleven in the longitude to which he had arrived—he caught sight ahead of a dark outline on the water, no doubt a group of islands, though whether the Andamans or the Nicobars he did not feel sure. Knowing that they were all hilly in formation, he slackened speed, intending to run down their coastline rather than cross them. It would not be difficult to find one of the many channels between them through which he could continue his flight, past the northern end of Sumatra to Penang. By taking a southerly course, moreover, he would, be able to assure himself of his direction.

After a short run parallel with the coastline he came to a wide channel which he believed to be, and subsequently ascertained to be, the Ten Degree channel between Little Andaman and Car Nicobar. From this, if he was right, there would be an uninterrupted course south-east to Penang. But within half-an-hour of entering the channel, still flying low, he suddenly ran into a dense cloud of exceedingly pungent smoke, which completely hid the sea beneath him. It made him cough, and woke Rodier with a start.

"What's this, mister?" he shouted, rubbing his eyes.