The book is a record of the author's voyages to Java, Sourabaya, Sambas, Sinkawan, Siam, Trengganu, Singapore and other places in Southeast Asia. He describes the countries, their rich natural resources and commerce, the local population, like the Chinese, Malays and Dyaks and their customs, food and culture. There are also comments on the political and social situation, the adminstration of the Dutch and European influence on the local population. The last 3 chapters are on Singapore where the author spent 9 months. He relates the social, economic and religious situation then. Details include decriptions of the various ethnic groups and their enclaves, trade, adminstration and the general prosperity of Singapore.