410 THE GEOLOGIST. 
her ocean waters ought to be drawn up on this, and not the othei 
side. We do not mean to say there is no water there, because all 
the water and nearly all the air which is left on the moon, som€ 
astronomers tell us, is there, kept back by the mountains. Thus 
— the features of our moon being very highly exaggerated, of course, 
that is to say, the water (shaded in the diagram) on the invisible fac€ 
of the moon, and the atmosphere (dotted) above, do not exceed ir. 
height the level of the lowest valley in the mountain-ridges whicl 
keep them back. There rnay be a little water remaining in the ocean- 
cavities on the side we see (a little air also), retained by the angulai 
position of other ridges, which keep them hack (as at a b, c d). Sucl 
are the views some take, while all map out great spaces and call 
them seas, — Mare Nuhiu7)i, Mare Humorum, Mare Tranquillitatis 
Mare Serenetatis, Mare Iinhrium, and Oceanus Procellarum. Bui 
they do not tell us what has become of the water that once was ir 
them. " Gone to the other side." Gone against attraction ? — No. Wil! 
Professor Phillips, who is doing Lunar Geology as well as Terrestrial 
tell us 1 Will any Oxford scholar tell us — divine or scientific 1 
Wlien Mr. Airy lectured at the great Manchester Hall, a few weeks 
since, he said — 
"The following diagrams (Nos. 2 and 3) are by Professor Plantamore, whc 
went from Geneva to the east coast of Spain. As the moon entered on the right, 
