An early account of Jamu (old spelling Djamu), the traditional medicine of Indonesia, especially Java. "It is a predominantly herbal medicine made from natural materials, such as parts of plants such as roots, bark, flowers, seeds, leaves and fruits.^[1] Materials acquired from animals, such as honey, royal jelly, milk and ayam kampung eggs are also often used" (Wikipedia article on Jamu, accessed 06-2017). Digital facsimile from Google Books at this link.  Also published in German as Practische Beobachtungen iffier einige Javanische Arzneimittel (Leipzig, 1829).