What kinds of work did Charles Sanders Peirce do after leaving the U.S. Coast and Geodetic Survey?

After resigning from the U.S. Coast and Geodetic Survey at the end of 1891, Charles Sanders Peirce did not hold regular employment or maintain a steady income for the remainder of his life. During these years, he worked as a consulting chemical engineer, mathematician, and inventor.1

Living as a self-described "bucolic logician" on a farm near Milford, Pennsylvania, he dedicated his final years to the radical revision and systematic completion of his philosophy, which he eventually termed "pragmaticism". Despite living in poverty and suffering from serious illness, he continued his intellectual pursuits until his death in 1914, supported by aid from friends such as William James.1