Sentence:  It has heretofore mainly consisted in the addition of rice, sand, and shop-sweepings, but recently a trade has sprung up in the sale of “poivrette” or “<WSD>pepperette</WSD>,” a substance which is made in Italy by grinding olive stones, and is sold in this country at about 1"d". a lb., whereas the price of the pepper with which it is mixed is from 8"d". to 1s.6"d". a lb. 
Meaning of the word marked with <WSD> tags:  An adulterant added to ground peppercorns, made from ground olive pits.