The news of their coming marriage was not the only good news they had. Walter and Edna had been working day and night for months on a great chemical discovery and had now succeeded in completing it. This discovery was a perfectly harmless gas to be used in war or for medical purposes. It would put people to sleep and they would remain asleep for 7 days, with no ill effects. It had always been Robert's desire to have something to use in war which would not destroy human lives and he was very much elated over Walter's discovery. Walter told him that he had already tested it and that Edna had such confidence in him, she had taken the gas, remained asleep for 7 days, and felt no ill effects. Walter knew just exactly why it worked, because he was a great chemist and knew the natural law behind the discovery. He told Robert that this must be kept a secret until time of war when with the new ship "Marie the Angel of Mercy," traveling 1000 miles an hour, they could go from one city to another or from one battlefield to another, release the gas and put everyone to sleep for 7 days. In the meantime, with "The Demon of Death"--they could destroy the enemy's bases and fortifications; would be able to make their own peace terms with the enemy, and at the same time obey the divine command of God "Thou shalt not kill." Cotton had been advancing rapidly and Robert and Walter were making money fast. Robert told Walter and Edna that on June 9th, his birthday, he was going to give them a big dinner and celebration before their marriage. It was now time to declare a holiday and have a real jubilee celebration after their great discoveries were completed, that it was but fitting to crown the event with the marriage of Edna and Walter. They were now in position to sit calmly by and wait for the great war in the air knowing that, with their secret discoveries, they were prepared to save the United States in time of war and at the same time without sacrificing too many human lives.