Part 35

Chalcedony 126

Chalk 63, 94, 95

Chert 129

Choak-damp n. 37

Chryſopraſius 131

Cinnaber 176

Clay 114

Coal 139

—— yields vol. alkaly n. 50

Cobalt properties of 225

—— ſpecies of 226–231

Cobaltum (ſee cobalt)

Common ammoniac 52

—— ſalt 49, 76

Copper, its properties 188

—— ſpecies of 189–196

Corniſh fluor, n. 30

Cubic nitre 48

Cuprum (ſee copper)

—— nicolai 218

—— vitriolatum 69, 80, 82

Derbyſhire fluor, n. 30

Diamond 142

Digeſtive ſalt 46

Dyer’s earth 114

Earths properties of 21

—— have an attraction for each other 103

—— primitive and derivative 83–86