| The American quercitron bark gives us also a useful additional yellow dye. |
| In winter they are passed through a slightly chalky water, then washed at the wheel, and dyed in quercitron or weld. |
| In America scarlet was created from the cochineal beetle, black from logwood and yellow from quercitron. |
| Some of the latter is so deficient as to afford colours nearly as fugitive as those of Brazil wood and quercitron. |
| In America quercitron is used for tanning, and in Europe for dyeing only. |
| A very minute proportion of quercetin, a principle yielded by quercitron bark, has been obtained from catechu. |
