Cassia bark (Fig. 3), French cassia and German cassia, are the dried bark of a tree which grows twenty to forty feet high, sometimes even sixty feet high, irregular and knotty, with large spreading horizontal branches, outer bark thick, rough and scabrous, with ash color, speckled inner bark reddish with dark green and light orange color. It is known to commerce as cassia lignea or China cinnamon, and is from the Cinnamomum aromaticum. It is found in South China and is a native of Ceylon, Cochin China, East India, and Java, and has been brought from China since the earliest days of history. It is produced by an undescribed tree of several species of cinnamomum, differing from each other in foliage and in inflorescence and aromatic properties, and has about as many names in Chinese as there are provinces in which it is found growing. It is found most abundantly in the province of Kwangsi in the south of China, large quantities being brought to Canton annually from “Kwei lin Foo” (literally the City of the Forest of Cassia Trees), deriving its name from the forests of cassia around it, and is the capital and principal city of the province. The exact botanical source of China Cassia lignea was not known until 1884, although it was generally attributed to the tree now proved to yield it (Cinnamomum cassia). It is cultivated in the three following districts of China: Taiwu, Kwangsi province, and Lukpo and Loting, both in Kwang-tung province. Taiwu is about 180 miles west of Canton and from four to five miles from the West River, but the nearest cassia plantations are from twenty-five to thirty miles farther, in a southern or southwestern direction. The Loting district commences from eight to ten miles from Loting City. After leaving the West River about eighty miles of the Loting River and the Nam-Kong must be traversed before reaching the city, and from there the distance is made overland. In these plantations there are 52,600 acres which have been under cultivation for about forty years. Lukpo is least important. The city of Lukpo is situated on the northern bank of the West River. The nearest plantation is about fifteen miles distant from Lukpo City.