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Science experiments, tests, investigations, and exploration are fun but can be dangerous. Learn the simple precautions you need to follow to make science studies safe.

Cushitic Lexicon and Phonology contains a concise reconstruction of lexical and phonological proto-forms for various stages in the development of Cushitic languages, the largest branch within the Afrasian (Afro-Asiatic) phylum. It is based methodologically on the comparative method of historical linguistics, using sound correspondences as major device for the identification of cognates. This almost-finished study was left by the author upon his untimely death in 2008 and was typog...