Welles, the secretary of the navy; and William Seward, the secretary of state. On May 6, 1862, Emerson's protégé Henry David Thoreau died of tuberculosis at the age of 44. Emerson delivered his eulogy. He often referred to Thoreau as his best friend, despite a falling-out that began in 1849 after Thoreau published A Week on the Concord and Merrimack Rivers. Another friend, Nathaniel Hawthorne, died two years after Thoreau, in 1864. Emerson served as a pallbearer when Hawthorne was buried in Concord, as Emerson wrote, "in a pomp of sunshine and verdure". He was elected a Fellow of the American Academy of Arts and Sciences in 1864. In 1867, he was elected as a member to the American Philosophical Society. Final years and death Starting in 1867, Emerson's health began declining; he wrote much less in his journals. Beginning as early as the summer of 1871 or in the spring of 1872, he started experiencing memory problems and suffered from aphasia. By the end of the decade, he forgot his own name at times and, if asked how he felt, would respond "Quite well; I have lost my mental faculties, but am perfectly well". In the spring of 1871, Emerson took a trip on the transcontinental railroad, barely two years after its completion. Along the way and in California he met a number of dignitaries, including Brigham Young during a stopover in Salt Lake City. Part of his California visit included a trip to Yosemite, and while there he met a young and unknown John Muir, a signature event in Muir's career. Emerson's Concord home caught fire on July 24, 1872. He called for help from neighbors and, giving up on putting out the flames, all tried to save as many objects as possible. The fire was put out by Ephraim Bull Jr., the one-armed son of Ephraim Wales Bull. Donations were collected by friends to help the Emersons rebuild, including $5,000 gathered by Francis Cabot Lowell, another $10,000 collected by LeBaron Russell Briggs, and a personal donation of $1,000 from George Bancroft. Support for shelter was offered as well; though the Emersons ended up staying with family at the Old Manse, invitations came from Anne Lynch Botta, James Elliot Cabot, James T. Fields and Annie Adams Fields. The fire marked an end to Emerson's serious lecturing career; from then on, he would lecture only on special occasions and