As we proceeded across the broad balcony, I was astonished to discover that the outside walls of this building were entirely covered with beautifully carved reliefs, representing the inventions of Sarraccus.  Had it been daylight at the observatory, I would have noticed that it, too, was decorated with the wonders of other worlds discovered by Almos.  The mountains on Earth, the seas, clouds, volcanoes, and ships; these and many other objects that do not exist on Mars, were carved with remarkable faithfulness upon the walls of the observatory, and were looked upon by Martians as the wonders of a strange world.

As at the observatory, the doorway was hung with heavy portieres, and, passing through these, we found ourselves in what appeared to be an immense palm garden, in which Martians were to be seen sitting in groups, or walking about admiring the plants and flowers.  Sunlight streamed in through the roof, the covering of which had been rolled back, and I became aware that it was in such places as this that the Martians were to be found during the heat of the day.

Rain being unknown, it was necessary to grow the more delicate plants where they might be watered regularly and sheltered from the heat of the midday sun, and also from the hot winds that often came at this season.  I now realized that the trees that I had noticed were to be found only upon the banks of streams and lakes, and that, with the exception of the green these afforded, Mars was entirely covered with a small and hardy pink flower of the antennaria family, which flourishes in a dry and sandy soil.

Reon now left me, promising to return within an hour, in order that I might reach the observatory in due time.  As I walked slowly among the tall palms, taking a path here and there at random and admiring the beautiful beds of flowers, some of which I recognized as flowers also indigenous to Earth, I noticed that all whom I met greeted me in the most cordial way, some pausing to say a few words.  I saw the importance of saying whatever was prompted by the first appearance of the individual, and I found that I could thus join in a most enjoyable conversation with these charming people, with a knowledge of their names and the matters of interest to them.  All were very enthusiastic about the lumaharp, and I anxiously awaited another number upon this wonderful instrument.

As the paths I turned down were all strange to me, I judged that Almos was not familiar with the interior of this particular building, but as there were many gardens nearer the observatory, he would have no reason to visit this one, except on an occasion of this kind.

Not realizing the enormous size of the building, I had wandered far from the entrance at which I was to meet Reon, and had decided to ask to be directed back, when suddenly I stopped, rooted to the ground, every nerve straining to catch a faint melodious sound that seemed to fill the air.  No music on Earth could equal it!  Before me arose a vision of beautiful flowers—­flowers that had thoughts as beautiful as themselves, and that through the genius of a man poured forth their souls in a volume of melody, so beautiful as to beggar description.