All the people then saw that their time had come. Many-thousand-throated cries rent the air. “The World is burning. We are on fire!” they cried.

All the horizon, in fact, was now lit up with flame, forming a crown of blue light. It was, indeed, as had been foreseen by scientists, the oxide of carbon igniting in the air and producing anhydrid of carbon. Clearly, too, hydrogen from the Comet combined with it.

On a sudden, as the people were gazing terrified, motionless, mute, holding their breath, and scared out of their wits, the vault of Heaven seemed to be rent asunder from the zenith to the horizon. Through the gaping breach there seemed to appear the huge red mouth of a dragon, belching forth sheaves of sputtering green flames.

The glare of the atmosphere was so fierce that those who had not already hidden themselves in the cellars of their houses, now all rushed helter-skelter to the nearest underground openings, be they subway steps, cellar doors or sewer manholes. Thousands were crushed or maimed during this mad stampede, while many others, frantic from fright and stricken with the heat, fell dead from apoplexy.

All reasoning powers seemed to have ceased. Among those cowering in dark cellars and subterranean passages below, there was nothing but silence, begot by dull resignation and stupor.

Of all this panic-stricken multitude, only the astronomers had remained at their posts in the Observatories, making unceasing observations of this great astronomic phenomenon. They were the only eye-witnesses of the impending collision.

Their calculations had been that the terrestrial globe would penetrate into the core of the Comet, as a cannon ball might into a cloud. From the first contact of the extreme atmospheric zones of the Earth and of the Comet, they had figured, the transit would last four hours and a half.

It was easy to compute, since the Comet, being about fifty times as large as the Earth, was to be pierced, not in its centre, but at one-quarter of the distance from the centre, with a velocity of 173,000 kilometers an hour.

It was about forty minutes after the first atmospheric impact with the Comet, that the heat and horrible stench of burning sulphur became so suffocating that a few more moments of this torment would put an end to all life. Even the most intrepid of astronomers withdrew into the interior of their glass-domed observatories, which they could close hermetically as they descended into the deep subterranean vaults.

The longest to stay above was a young assistant astronomer, a girl student from California, whose nerves had been steeled during the ordeal of the San Francisco earthquake. She remained long enough to witness the apparition of a huge, white-hot meteorite, precipitating itself southward with the velocity of lightning.