This is a comprehensive descriptive grammar of the Tukang Besi language. Since Tukang Besi is a hitherto virtually undescribed language of eastern Indonesia, the book includes samples of glossed and translated texts, and a vocabulary. In addition to general descriptive coverage of many morphosyntactic phenomena, several aspects of the grammar (such as the status of pronominal indexing, the grammatical status of the 'subject' and other arguments, and the interactions of grammatical function changing constructions) receive a more detailed treatment, since they bear on aspects of concern for modern theoretical linguistics. Clause structure requires separate references to morphological cases, syntactic roles, and semantic roles, since different grammatical processes are sensitive to different combinations of these kinds of clause-internal relations. Add to this the possibilities of adding applicative and causative formatives, and the result is a system of great complexity and elegance, one that will appeal to general linguists of various theoretical persuasions. Because of the geographical location of Tukang Besi and its unusual combination of typological features - it combines features of the Philippine-type languages found to the north and west, and of eastern Indonesian and western Oceanic languages to the south and east - this grammar will be of interest to Austronesianists (both synchronically and diachronically) as well as general linguists.