In Europe, the technique was described for the first time in the "History of Java", published in London in 1817 by Stamford Raffles, who had been a British governor of Bengkulu, Sumatra. In 1873 the Dutch merchant Van Rijckevorsel gave the pieces he collected during a trip to Indonesia to the ethnographic museum in Rotterdam. Today the Tropenmuseum houses the biggest collection of Indonesian batik in the Netherlands. The Dutch and Chinese colonists were active in developing batik, particularly coastal batik, in the late colonial era. They introduced new patterns as well as the use of the (copper block stamps) to mass-produce batiks. Displayed at the Exposition Universelle at Paris in 1900, the Indonesian batik impressed the public and artists.