A second manuscript entitled “Steamblast eruptions,” was based on Mount Pelée in Martinique and a comparison with the 1924 steamblast of Kilauea. This last had conclusively shown outflow under the sea, and inflow of groundwater, to change lava surging to blasts from a steam boiler. A paper published in 1940 was a study of the gas collections from flaming basalt on Kilauea and Mauna Loa, made by E. S. Shepherd and me. In this I plotted curves of relative excellence of collection in relation to the amount of the volcanic gases, in contrast to the non-volcanic aqueous and oceanic gases. These latter, notably water vapor, decreased in proportion to the manipulative excellence of the handling of vacuum tubes; and the volcanic gases increased, notably hydrogen and the carbon gases. This convinced me that the deep gas of volcanoes is hydrogen, associated with carbon dioxide and nitrogen. In this decade, too, war brought new demands on my time and experience and had its effect on the Kilauea Observatory. Major James Snedeker of the Marine Corps, legal officer for the Commanding General in Honolulu, having heard of our experience with motorcar amphibians, told me that the Pacific Ocean war would depend on amphibian landing craft. And a letter from Admiral Bloch urged me to send to the Navy details of our experience with amphibians. As this involved geology of beaches around the Pacific Ocean, I set to work on twelve monographs for the Navy dealing with the mechanism of amphibians and the problems they posed on beaches in Hawaii, Puget Sound, and Alaska. Other subjects about which I supplied information were the inflammability of Japanese buildings in the Tokyo earthquake, the handling of earthquake and volcano catastrophes and our material from journals on many places of volcanic danger in the Pacific.