"I feel thoroughly convinced in my own mind that such astonishingly rich quinine-yielding trees as those in Java are not known to exist (in any quantity) in Bolivia. These wonderful trees are only to be found in the Caupolican district in Eastern Yungas. The white flower is specially belonging to the cinchona 'rogo' of Apolo. "You will call to mind, no doubt, the very great difficulties you had to get this wonderful 'seed' looked at, even; how a part was purchased by Mr. Money for account of our East Indian Government for £50 under condition of 10,000 germinating. Though 60,000 plants were successfully raised from it by the late Mr. McIver, I only received the £50. "The seed taken by the Netherlands Government cost it barely £50. "Such, then, is the story attaching to the now famous _Cinchona Ledgeriana_, the source of untold wealth to Java, Ceylon, and, I hope, to India and elsewhere. I am proud to see my dream of close on forty years ago is realized; Europe is no longer dependent on Peru or Bolivia for its supply of life-giving quinine." Before closing this chapter I may mention that there is a considerable plantation of gutta-percha trees in the horticultural garden at Buitenzorg. The best producer of gutta-percha, _Pelaguium_ (_isonandra_) _Gutta_, grows nowhere on the island naturally, but seeds were obtained from two specimens of this plant which had been placed in the botanical garden, and the plantation was established some years ago at the suggestion of Dr. Treub. In view of the recent development of electrical engineering and the increased demand for indiarubber generally which has arisen in the last few years, the fact that an unlimited supply of this valuable plant can be obtained in Java is one of some importance to the commercial world. CHAPTER XII. SOCIAL LIFE. Dutch society in the East--Batavian etiquette-- English residents--Clubs--Harmonie--Concordia-- Lawn-tennis--Planters--Horse-racing.