First Entire
Refrig. Refrig.
Emery 10000 to 9117 -- 9020
Copper ---- to 8512 -- 8702
Gold ---- to 8160 -- 8148
Zinc ---- to 7653 -- 6020
6804
Silver ---- to 7619 -- 7423
Marble White ---- to 6774 -- 6704
Marble common ---- to 6636 -- 6746
Stone calcareous hard ---- to 6617 -- 6274
Gres ---- to 5596 -- 6926
Glass ---- to 5576 -- 5805
Lead ---- to 5143 -- 6482
Tin ---- to 4898 -- 4921
Stone calcareous soft ---- to 4194 -- 4659
Clay ---- to 4198 -- 4490
Bismuth ---- to 3580 -- 4081
Chalk ---- to 3086 -- 3878
Gum ---- to 2325 -- 2817
Wood ---- to 1890 -- 1594
Pumice-stone ---- to 1627 -- 1268