The following tables give the observed figures in the different experiments:
Table I
| A S.P. | B S.P. | C S.P. | |
|---|---|---|---|
| Salt-acid Tan | C. | C. | C. |
| Australian Opossum | 46° | 58° | 45° |
| Marmot | 45° | 50° | 42° |
| Skunk | 47° | 56° | 43° |
| Chamois Tan | |||
| Mink | 52° | 61° | 45° |
| Muskrat | 50° | 58° | 42° |
A—Water
B—Water plus 1% Ammonia (s.g. 0.910)
C—Water plus 1% Sulphuric acid (66° Beaumé)
Table II
| A S.P. | B S.P. | C S.P. | |
|---|---|---|---|
| Salt-acid Tan | C. | C. | C. |
| Australian Opossum | 53° | 52° | 54° |
| Chamois Tan | |||
| Mink | 59° | 59° | 59° |
A—1000 c.c. water plus 40 c.c. Peroxide plus 5 c.c. ammonia
B—500 c.c. water plus 2 grams Ursol D (Para-phenylene-diamine)