 So similar are the trees of the " true " and the " bastard " logwood, that it is frequently impossible to decide whether a tree is really a " mulatto " or not. When first cut a bastard tree is frequently dark enough internally to indicate that it is a...  A Dictionary of Applied Chemistry - Page 156by Thomas Edward Thorpe - 1922Full view - About this book
 | Sir Norman Lockyer - 1905 - 1044 pages
...yellowish-green pigment which is of ho value, and which, when mixed with the commercial extract, reduces the characteristic tinctorial properties. Chips of the...chocolate coloured surface, instead of the dark red or deep purple bronze-tinted colour of the best logwood. There appears great uncertainty, even when the... | |
 | Jamaica. Department of Agriculture - 1904 - 304 pages
...admixed with the commercial extract, reduces the characteristic tinctorial properties of the latter. Chips of the " bastard" logwood present a yellow, pale pink, white or even chocolate-coloured surface instead of the dark red or deep purple, bronze-tinted colour of the best... | |
 | Arthur George Perkin, Arthur Ernest Everest - 1918 - 694 pages
...variety of the tree known as " bastard " logwood. Bastard logwood is practically devoid of haematoxylin, but contains instead a yellowish-green pigment which,...first cut a bastard tree is frequently dark enough internally to indicate that it is a good red-wood tree, but instead of darkening with age, as all the... | |
 | Arthur George Perkin - 1918 - 678 pages
...Bastard logwood is practically devoid of haematoxylin, but contains instead a yellowish-green pig. ment which, when admixed with the commercial extract, reduces...first cut a bastard tree is frequently dark enough internally to indicate that it is a good red-wood tree, but instead of darkening with age, as all the... | |
 | Arthur George Perkin, Arthur Ernest Everest - 1918 - 692 pages
...Bastard logwood is practically devoid of haematoxylin, but contains instead a yellowish-green pig. ment which, when admixed with the commercial extract, reduces...dark red or purple-bronze tinted colour of the best Jamaicai»or Mexican logwoods of commerce. So similar are the trees of the " true " and the " bastard... | |
 | Sir Norman Lockyer - 1905 - 1048 pages
...yellowish-green pigment which is of no value, and which, when mixed with the commercial extract, reduces the characteristic tinctorial properties. Chips of the...chocolate coloured surface, instead of the dark red or deep purple bronze-tinted colour of the best logwood. There appears great uncertainty, even when the... | |
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