"Let me present to you the curious scene my eyes encountered as I sat in the great Chorus Hall. I say my eyes. It is hard perhaps for you to realize what an organ can be in a creature, so apparently, as we are, little more than gaseous condensations. The physiology and morphology of a spirit is not an easy thing to grasp or define. I am yet ignorant upon many points. But dimly, at least, I may make your natural senses cognizant of it. "You have seen faces and forms in clouds. How often you and I from Mount Cook on the earth have watched their changing and confluent lineaments in the clouds above the New Zealand Alps. It is the same way with Martian spirits. They are tenuous fluids, but the individual pervades them and a material response is evoked, and the light from their surfaces is so halated, intensified, or reduced as to form a figure with a head and arms and legs. "In some way I imagine the organs are optical effects, ruled by mind, which is located in this luminous matter. Later I will describe the process of _solidification, the resumption of matter_, for these spirit forms slowly concrete into beings like terrestrial men and women. There is, therefore, a dual population here, the extreme newly transplanted souls, and the flesh and blood people, and between them the transitions from spirit to corpuscular bodies. But all this takes place in the City of Light. Elsewhere over the whole planet the spirits are seldom seen, but only the vigorous and beautiful race of material beings into which, they--the spirits--have _consolidated_. "To return to my first experience in the Chorus Hall in the City of Light. I seemed to be in a great alabaster cage enormously large and very beautiful. Its shining walls rose from the ground and at a great height arched together. The front was a network of sculpture, it held the rising rows of what seemed like ivory chairs on which the motionless white and radiant assemblage were seated. The whole place glowed, and this phosphorescent prevails throughout the City of Light, just as it does in the Hill of the Phosphori, when we first landed in this strange existence. "The music came from a field in front of the Chorus Hall, which held a wonderful array of beings who, while not radiant as we were, had a _lustrous_ look over their smooth and lovely bodies, which were tightly clad in the palest blue tunics and leggings. These creatures were consolidated spirits. They are constantly augmented by new arrivals, and, as the number remains almost unchanged, as new arrivals appear, others leave and then move off from the City of Light into the vast regions of Mars outside and beyond the city.