Chipmunks, work and play in Chipmunkville, [131];
why they have large feet for such little people, [132];
inside the Chipmunk's home, [132];
why they have several front doors, [133];
how they spend the winter, [218]
Clouds, how dust helps make them, [56];
and shape them, [57]
Colorado, once the home of prehistoric monsters, [27]
Corn, how the "rag babies" tell the fortune of the seed, [199]
Crabs, water farmers who help make land, [140]
Crayfish, their habits and their service in helping get land ready for the farmer, [140]
Crustaceans, their relation to insects, [143]
Cuvier, Baron, the famous paleontologist, and his adventure with a "monster," [34]
Dandelions, flying machines of, [51]
Darwin, Charles, on the importance of earthworms in the history of human civilization, [75];
what he said about the intelligence of roots and why he said it (the whole chapter is about that), [186];
how he taught roots to write their autobiographies, [190]