[1831] Book of the Values of Merchandize imported, according to which Excize is to be paid by the First Buyer, Lond. 1657.
[1832] According to Consul Hughes of Hankow, San-yuan in Shensi (north of Sin-ganfu) is one of the principal marts for rhubarb.
[1833] Chauveau, Vicar Apostolic of Tibet (1870), and Biet, a French missionary, both quoted by Collin in his thesis Des Rhubarbes, Paris, 1871. 22. 24.
[1834] Petermann’s Geograph. Mittheilungen, viii. (1873) 302.
[1835] Reports on Trade at the Treaty Ports of China for 1870; Commercial Reports from Her Majesty’s Consuls in China, 1872. No. 3. p. 57, and 1874 (1875) No. 5.
[1836] Annual Statement of the Trade and Navigation of the United Kingdom for 1870. 79.
[1837] From the Indus to the Tigris, London, 1874. 321.
[1838] It is now often trimmed by wholesale druggists to simulate the old Russian rhubarb.
[1839] The quality and appearance of rhubarb are far more regarded in England than on the Continent. To ensure a fine powder of brilliant hue, the drug is most carefully prepared, each root being split open, and any dark or decayed portion removed with a chisel or file, while the operator is not allowed to handle the drug except with leather gloves.
[1840] Their formation has been investigated by Schmitz, Proceedings of the “Naturforschende Gesellschaft zu Halle”; the author also shows that the drug is chiefly afforded by the rhizome.—An abstract of the paper will be found in Just’s Botanischer Jahresbericht, 1874. 461.