Indigo...........

77

Gun powder.............

93

Butter...............

94

Ice................

117

Clay....................

120

Coal................

130

Peat...................

133

Opium..................

134

Honey..............

14b

Ivory...............

183

Brick....................

200

Sulphur..................

203

Porcelain..................

226

Stone..................

252

Marble.................

870

Granite....................

278

Chalk.................

279

Glass........................

289