Something like this he conceives to have taken place around _Tycho_.

As the crust cooled, it cracked.

The lava from the interior, oozing out, spread itself on both sides of the cracks.

This certainly explains pretty satisfactorily why those flat glistening streaks are of much greater width than the fissures through which the lava had at first made its way to the surface." "Well done for an Englishman!" cried Ardan in great spirits.
"He's no Englishman," said M'Nicholl, glad to have an opportunity of coming off with some credit.

"He is the famous Scotch engineer who invented the steam hammer, the steam ram, and discovered the 'willow leaves' in the Sun's disc." "Better and better," said Ardan--"but, powers of Vulcan! What makes it so hot?
I'm actually roasting!" This observation was hardly necessary to make his companions conscious that by this time they felt extremely uncomfortable.