seven o'clock in the evening
`` You may be right , '' said Ardan by way of reply ; `` as for me , I 'm looking out for another city . But I 'm sorry to say that our Projectile is increasing its distance so fast that , even if one lay at my feet at this moment , I doubt very much if I could see it a bit better than either you or the Captain . '' _ Newton _ was soon passed , and the Projectile followed a course that took it directly over the ring mountain _ Moretus _ . A little to the west the travellers could easily distinguish the summits of _ Blancanus _ , 7,000 feet high , and , towards seven o'clock in the evening , they were approaching the neighborhood of _ Clavius _ . This walled-plain , one of the most remarkable on the Moon , lies 55 ° S. by 15 ° E. Its height is estimated at 16,000 feet , but it is considered to be about a hundred and fifty miles in diameter . Of this vast crater , the travellers now at a distance of 250 miles , reduced to 2-1/2 by their telescopes , had a magnificent bird 's - eye view . `` Our terrestrial volcanoes , '' said Barbican , `` as you can now readily judge for yourselves , are no more than molehills when compared with those of the Moon .