The Grocer's Companion —— And Merchant's Hand-Book

----- Grocer's Companion

ISBN: 9781331744146 出版年：2016 页码：195 Forgotten Books

Tea — IS extensively adulterated in China by means of exhaust ed tea leaves and the leaves of other trees, to the amount of many millions of pounds annually. China clay, fine sand, iron filings, etc., to the extent of from 20 to 40 per cent. Are used, the tests for which are simple, and will be referred to under its proper head.