Boston Monday Lectures: Biology, a book of popular essays by the American orator Joseph Cook first published in 1879, was derived from a successful lecture series at Boston’s Tremont Temple in 1878 that expertly synthesised the scientific scholarship of the day for public consumption and attempted to show that science was in harmony with religion and the Bible. Writing with clarity and conveying excitement to the lay audiences who flocked to hear him, Cook’s lectures became extremely popular around the world. Biology focuses on evolution, immortality and materialism. In 13 lectures, Cook discusses topics including T. H. Huxley and John Tyndall’s ideas on evolution, Rudolf Hermann Lotze’s thoughts on theism, and microscopy. Cook’s lectures on immortality all begin with ‘Does Death End All?’ before probing further into a philosophical aspect of immortality. Cook interjects short essays, which he calls ‘preludes’, on subjects as diverse as political patronage and Daniel Webster’s death.