The Austronesian comparative dictionary (ACD) is an open-access online resource that currently (June 2013) includes 4,837 sets of reconstructions for nine hierarchically ordered protolanguages. Of these, 3,805 sets consist of single bases, and the remaining 1,032 sets contain 1,032 bases plus 1,781 derivatives, including affixed forms, reduplications, and compounds. Historical inferences are based on material drawn from more than 700 attested languages, some of which are cited only sparingly, while others appear in over 1,500 entries. In addition to its main features, the ACD contains supplementary sections on widely distributed loanwords that could potentially lead to erroneous protoforms, submorphemic “roots,” and “noise” (in the information-theoretic sense of random lexical similarity that arises from historically independent processes). Although the matter is difficult to judge, the ACD, which prints out to somewhat over 3,000 single-spaced pages, now appears to be about half complete.

Part 1 presents some 980 reconstructions for Proto-Micronesian, Proto Central Micronesian, and Proto Western Micronesian. Part 2 (to appear in volume 42 [2]) gives reconstructions for two additional subgroups within Proto-Micronesian: Proto-Pohnpeic and Proto-Chuukic, and their immediate ancestor, Proto Pohnpeic-Chuukic. A handful of putative loans are also identified, and a single English 2nder list is provided for all of the reconstructions.

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Part 1 (in volume 42 [1]) presents some 980 reconstructions for Proto-Micronesian, Proto-Central Micronesian, and Proto-Western Micronesian. Part 2 in this issue gives reconstructions for two additional subgroups within Proto-Micronesian: ProtoPohnpeic (PPON) and Proto-Chuukic PCK), and for the larger group that they comprise, Proto-Pohnpeic-Chuukic (PPC). A few putative loans are also identified, and a finder list for all reconstructions is provided.

Part 1 presents some 980 reconstructions for Proto-Micronesian, Proto-Central Micronesian, and Proto-Western Micronesian. Part 2 (to appear in volume 42 [2]) gives reconstructions for two additional subgroups within Proto-Micronesian: Proto-Pohnpeic and Proto-Chuukic, and their immediate ancestor, Proto-Pohnpeic-Chuukic. A handful of putative loans are also identi²ed, and a single English ²nder list is provided for all of the reconstructions. INTRODUCTION.Lexical data for a number of Micronesian languages began to be collected systematically in the mid-1960s as part of the development of language lessons for the U.S. Peace Corps and in connection with other Micronesian language projects that followed at the University of Hawai'i. These data were stored on a mainframe computer using programs then being developed (Hsu and Peters 1984), and eventually dictionaries were published for a number of the languages included in this study (