-----------+---------+---------+---------+--------------+--------- Temperature| Tanning | Soluble |Per cent.| Colour of |Per cent. of | Matters.| Non- |of Tannin|¹⁄₂ per cent. | of Extraction.| |Tannins. | on | Solution in |Colour on | | | Maximum.|¹⁄₂ inch Cell.| Maximum. | | | +----+---------+ | | | |Red.| Yellow. | -----------+---------+---------+---------+----+---------+--------- °C. |per cent.|per cent.| |deg.| deg. | 15 | 13·0 | 10·4 | 61·6 |14·2| 20·8 | 64·7 15-30 | 16·1 | 10·4 | 76·3 |16·1| 21·7 | 69·8 30-40 | 17·4 | 12·5 | 82·4 |15·8| 23·0 | 71·7 40-50 | 18·5 | 11·4 | 87·7 |16·5| 33·5 | 73·8 50-60 | 20·3 | 10·3 | 96·2 |16·0| 23·4 | 72·8 60-70 | 20·0 | 11·4 | 94·7 |17·5| 31·2 | 90·0 70-80 | 20·4 | 11·2 | 96·7 |16·5| 28·3 | 82·8 80-90 | 21·1 | 10·8 | 100·0 |15·4| 24·6 | 73·8 90-100 | 20·2 | 11·4 | 95·7 |23·0| 34·1 | 100·0 -----------+---------+---------+---------+----+---------+--------- CANAIGRE ROOT (three years old). _Effect of Different Temperatures._ -----------+---------+---------+---------+-------------------+------- Temperature| Tanning | Soluble |Per cent.| Colour of ¹⁄₂ per | Per of | Matters | Non- |of Tannin| cent. Solution in | cent. Extraction.| absorbed| Tanning | on | ¹⁄₂-inch Cell. | of | by Hide.| Matters.| Maximum +----+-------+------+ Colour | | | Yield. |Red.|Yellow.|Total.| on | | | | | | |Maximum | | | | | | | Yield. -----------+---------+---------+---------+----+-------+------+------- °C. |per cent.|per cent.| |deg.| deg. | deg. | 15 | 21·1 | 13·0 | 78·7 | 1·6| 4·1 | 5·9 | 41·5 15-30 | 26·2 | 12·5 | 85·6 | 1·6| 3·8 | 4·4 | 38·0 30-40 | 28·1 | 12·5 | 91·8 | 1·4| 3·7 | 5·1 | 35·9 40-50 | 30·5 | 13·1 | 99·6 | 2·1| 4·2 | 6·3 | 44·3 50-60 | 30·6 | 13·6 | 100·0 | 2·4| 4·8 | 7·2 | 50·7 60-70 | 27·2 | 14·1 | 88·8 | 2·5| 5·0 | 7·5 | 52·7 70-80 | 26·4 | 14·6 | 86·2 | 2·8| 6·1 | 8·9 | 62·6 80-90 | 23·2 | 14·8 | 75·8 | 3·1| 6·9 | 10·0 | 70·4 90-100 | 22·8 | 14·8 | 74·5 | 4·3| 7·4 | 11·7 | 82·4 Boiled | | | | | | | ¹⁄₂ hour | 19·2 | 12·3 | 62·7 | 5·6| 8·6 | 14·2 | 100·0 -----------+---------+---------+---------+----+-------+------+------- CUBE GAMBIER. _Effect of Different Temperatures._