A Standard Invoice of Green tea contains a number of “Lines,” made up as follows: Gunpowder, No. 1 and 2 and 3; Imperial, No. 1, 2 and 3; Young Hyson, No. 1, 2 and 3. There being rarely more than two lines of Hyson, and never more than one of Twankay. A “Chop” of Oolongs comprises four, sometimes five, “Lines” termed “Firsts,” “Seconds,” “Thirds,” “Fourths” and “Fifths,” when any, which are again subdivided into “Brackets” or “Numbers,” ranging from one to ten but similar in grade. An Invoice of “English Breakfast teas” includes a quantity of Capers, Pekoes, Congou and Souchong teas, graded and classed according to the district of production, by which terms they are best known to trade. A Standard Invoice of Japans embrace some Pan-fired, Sun-dried and Basket-fired teas with occasionally other makes, also ranking according to the different districts. A “Break” or “chop” of India or Ceylon include Pekoes, Congous, Pekoe-Souchongs, Broken-leaf and Fannings, and are best known to trade by their plantation names and district appellations. The term “Muster” means Sample-package or chest, the name on top of label the vessel, route or “chop,” the initials in centre those of the importer. The names at bottom such as “Tong-mow,” “Tong-lee,” grower or packer, and the Chinese character on inside of package. “Chop mark,” denoting the “chop” or picking, which cannot always be relied on, as shippers are apt to put on that which has the best reputation, or which happens to be most in demand the season of shipping. ------------------------------------------------------------------------ CHAPTER VI. ADULTERATION AND DETECTION. --------------