The decade following my mud-pie experiments saw me assistant professor at Harvard and head professor of the geological department at Massachusetts Institute of Technology. These appointments were under Presidents Eliot, Pritchett, and Maclaurin. From 1901 to 1910 I continued to serve the Geological Survey, writing up back reports. Then nature took a hand. Along came earthquakes and eruptions in Guatemala, a terrific disaster in the West Indies, expeditions to the Caribbees, Italy, the Aleutian Islands, Japan, Hawaii, and Central America, another in north Japan, and disastrous earthquakes at San Francisco, Valparaiso, Messina, and Costa Rica. The destruction of St. Pierre in Martinique set the stage for field work on volcanoes and earthquakes, work which I was to continue for a half century. When the evening papers of May 8, 1902, announced the sudden annihilation of 26,000 people that morning at 8 o’clock at St. Pierre, Martinique, I went immediately to President Eliot. Knowing that I had been urging field study of volcanoes, he agreed that I ought to go to St. Pierre and wired Secretary of the Navy, William H. Moody, to arrange for transportation. Immediate financial support came to me from Alexander Agassiz, the National Geographic Society, and numerous friends; and my Harvard colleagues agreed to give my lectures. I reported to the training ship _Dixie_ in Brooklyn, where I found Captain Robert Berry, a stalwart Virginian, in command of a cadet crew. On board were I. C. Russell of Michigan, author of “Volcanoes of North America”; E. O. Hovey of the American Museum; Curtis, the maker of topographic models; R. T. Hill of the Geological Survey, and expert on Caribbean lands; and numerous other scientists, and newspaper correspondents. The voyage to the West Indies was unique. On the navy cruiser were stores of food, tents, clothing, and medical supplies for the refugees and an oddly assorted passenger list; all assembled because of warfare against mankind by two utterly unknown volcanoes, Soufrière on the British island of St. Vincent, and Pelée at the north end of the French colony of Martinique. Geologists gave lectures to the crew on deck; and in turn, we learned about naval discipline and efficiency. When we arrived at Fort de France, thirteen days after the terrific disaster, we were transported at once to St. Pierre on the naval tug _Potomac_. We landed and walked through the ruined sugar city, the streets puddled with molasses and rum. Thousands of dead were buried underfoot amid the rubble, for the day before our visit, there had been a second blast from Pelée, the 4,000 foot volcano smoking four miles away. This had thrown down what roofs remained after the first explosion.