tally 44, 260

California 200, 262–9

cash register 202, 217

Cassiodorus 114

Catalonia 157–9

Catullus 114

cave art 49–56, 57

Cayo Santiago, Puerto Rico 13

cells, brain 23–4

Census Bureau, US 212

census taking 3, 189, 190, 204–14, 205, 210

Central Yup’ik 260–1

Chaucer, Geoffrey 125, 164

childhood 21–2, 48, 49, 52, 60, 142, 150, 184, 189, 202–3

chimpanzee 17–18, 29, 32, 57

China 98, 136, 142, 148

counting boards in 141

counting rods in 188–95, 192

Homo sapiens spread into 43

number symbols and 187, 188–95, 192

paper and 150

soroban in 197, 199, 202

Tongan counting systems and 250

weather journals in 175

Chrisomalis, Stephen 183, 184

Chumash 264

cipher 159, 168–71

ciphering books 168–71, 181

clam 248, 262, 264–5, 267

clay 1, 51, 71–83, 75, 85, 90, 107, 136, 256, 257

Clever Hans 15–16

cloth, counting 126

Coast Miwok 264, 265

coins

counting 92–8, 93

counting boards and 124, 127, 129, 130, 131, 132

Greek 2, 103, 106, 109–11, 112, 119, 120

Indian number symbols and 140, 148, 193

Oksapmin and 235, 242, 243

computer 214, 217–18, 219

Computing-Tabulating-Recording Company 212

Coptic 98

Cordoba 157, 160

Cosquer, La Grotte 47–56, 47, 57, 73

costs, counting 262–9, 263

counter cultures 99–133

Athens 2, 101–11, 103, 132

counting boards and see counting boards

Indian number symbols see India

Roman Empire 112–17, 113