Species, serpents, spirits, and skulls: science in the margins of the Victorian age

Introduction : an age of transition

Swimming at the edges of scientific respectability : sea serpents, Charles Lyell, and the professionalization of geology

Franz Gall, Johann Spurzheim, George Combe, and phrenology : a science for everyone

The crisis in faith : William Crookes and spiritualism

Morals and materialism : Alfred Russel Wallace, spiritualism, and the problem of evolution

Thatige skepsis : Thomas Huxley and evolutionary theory

Negotiating the boundaries of science : an ongoing process.