Cacogenics – study of racial degeneration Caliology – study of bird's nests Calorifics – study of heat Cambistry – science of international exchange Campanology – art of bell ringing Carcinology – study of crabs and other crustaceans Cardiology – study of the heart Caricology – study of sedges Carpology – study of fruit Cartography – science of making maps and globes Cartophily – hobby of collecting cigarette cards Castrametation – art of designing a camp Catacoustics – science of echoes or reflected sounds Catalactics – science of commercial exchange Catechectics – art of teaching by question and answer Cetology – study of whales and dolphins Chalcography – art of engraving on copper or brass Chalcotriptics – art of taking rubbings from ornamental brasses Chaology – study of chaos or chaos theory Characterology – study of development of character Chemistry – study of properties of substances Chirocosmetics – beautifying the hands; art of manicure Chirography – study of handwriting or penmanship Chirology – study of the hands Chiropody – medical science of feet Chorology – science of the geographic description of anything Chrematistics – study of wealth; political economy Chronobiology – study of biological rhythms Chrysology – study of precious metals Ciselure – art of chasing metal Climatology – study of climate Clinology – study of aging or individual decline after maturity Codicology – study of manuscripts Coleopterology – study of beetles and weevils Cometology – study of comets Conchology – study of shells Coprology – study of pornography Cosmetology – study of cosmetics Cosmology – study of the universe Craniology – study of the skull Criminology – study of crime; criminals Cryobiology – study of life under cold conditions Cryptology – study of codes Cryptozoology – study of animals for whose existence there is no conclusive proof Ctetology – study of the inheritance of acquired characteristics Cynology – scientific study of dogs Cytology – study of living cells