[Chemical examination of the coloring principles of the Lichens.]
[BARKS FOR TANNING: cursory notice of a variety of suitable barks.]
[Proportions of tannin yielded by different barks.]
[CATECHU: definition of, and whence derived.]
[GAMBIER PLANT: cultivation in Singapore; returns from a plantation.]
[Different qualities of extract and mode of obtaining it.]
[Places of manufacture; average produce.]
[Terra Japonica, a misnomer.]
[Cutch, another name for Catechu.]
[Statistics of imports and consumption; the amount and value of Gambier from Singapore.]