-----------+---------+---------+---------+--------------+--------- Temperature|Tanning | Soluble |Per cent.| Colour of |Per cent. of |Matters. | Non- | of | ¹⁄₂ per cent | of Extraction.| |Tannins. |Tannin on| Solution in |Colour on | | |Maximum. |¹⁄₂ inch Cell.| Maximum. | | | +----+---------+ | | | |Red.| Yellow. | -----------+---------+---------+---------+----+---------+--------- °C. |per cent.|per cent.| |deg.| deg. | 15 | 14·2 | 17·8 | 70·0 | 1·6| 5·4 | 63·6 15-30 | 17·6 | 18·1 | 86·7 | 1·4| 4·3 | 51·8 30-40 | 18·5 | 18·1 | 91·1 | 1·3| 4·4 | 51·8 40-50 | 20·1 | 18·5 | 99·0 | 1·4| 4·4 | 52·9 50-60 | 20·3 | 19·1 | 100·0 | 1·5| 4·7 | 56·5 60-70 | 19·0 | 19·4 | 93·6 | 1·7| 5·6 | 66·6 70-80 | 18·0 | 19·9 | 89·1 | 1·9| 6·2 | 72·8 80-90 | 16·9 | 21·1 | 83·2 | 2·3| 6·8 | 82·7 90-100 | 16·6 | 22·3 | 81·7 | 2·6| 7·0 | 87·7 Boiled | 15·2 | 24·0 | 74·8 | 3·3| 7·7 | 100·0 -----------+---------+---------+---------+----+---------+--------- QUEBRACHO WOOD. -----------+---------+---------+---------+--------------+--------- 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 | 7·6 | 2·2 | 35·0 | 8·9| 14·1 | 71·3 15-30 | 10·1 | 2·4 | 46·5 | 6·4| 10·7 | 68·7 30-40 | 11·8 | 2·4 | 54·4 | 5·9| 9·6 | 65·2 40-50 | 15·1 | 2·4 | 69·5 | 5·3| 8·4 | 60·0 50-60 | 16·5 | 2·4 | 76·0 | 5·4| 8·5 | 60·4 60-70 | 17·4 | 2·4 | 80·0 | 5·6| 8·2 | 59·9 70-80 | 19·1 | 2·7 | 88·0 | 6·4| 8·6 | 67·4 80-90 | 21·7 | 3·0 | 100·0 | 6·4| 9·4 | 74·3 90-100 | 19·5 | 3·0 | 89·8 | 6·6| 9·8 | 100·0 -----------+---------+---------+---------+----+---------+--------- MANGROVE BARK (_Ceriops_).