OTD in 1881, Charles Darwin published his last book, on earthworms. It reflected a long interest in animal minds: “One alternative alone is left, namely, that worms, although standing low in the scale of organization, possess some degree of intelligence.” 🧪 🦋🦫 #HistSTM#philsci#pschsky#cogsci

It was his bestseller! (per biographer Janet Browne, if I recall the ref correctly).

I have a first edition with the Punch cartoon bound in

🌱🐋