Isolated aircraft went by at great altitudes but none came lower or attempted to land.

This statement should not however, be allowed to give an impression of great altitude.

They are very rare, and only found at a great altitude where no other game will live.

We were soaked to the skin and very cold, for the rain evidently came from a great altitude.

The aeroplane then assumes its first position, though at a slightly greater altitude.

Even at their great altitude, it was taking a long time to cross.

It was very rare, and only found at a great altitude, where no other game would live.

This was so despite the fact that he had not attained a significantly greater altitude for a long while.

But this second plane was at so great an altitude as to be indistinguishable against the sun from the ground level.

The much greater altitude somehow worked to lessen the terror of being dropped.