Cuneiform historiography

The key to reading logosyllabic cuneiform came from the Behistun inscription, a trilingual cuneiform inscription written in Old Persian, Elamite and Akkadian. (In a similar manner, the key to understanding Egyptian hieroglyphs was the bilingual Rosetta stone and Jean-François Champollion's transcription in 1822.) The complexity of the Assyrian cuneiform system prompted the development of a number of simplified versions of the script. Old Persian was written in a subset of simplified cuneiform characters known today as Old Persian cuneiform. It formed a semi-alphabetic syllabary, using far fewer wedge strokes than Assyrian used, together with a handful of logograms for frequently occurring words like "god" and "king". Ugaritic was written using the Ugaritic alphabet, a standard Semitic style alphabet (an abjad) written using the cuneiform method.

Historiography
In 1838 Henry Rawlinson, building on the 1802 work of Georg Friedrich Grotefend, was able to decipher the Old Persian section of the Behistun inscriptions, using his knowledge of modern Persian. When he recovered the rest of the text in 1843, he and others were gradually able to translate the Elamite and Akkadian sections of it, starting with the 37 signs he had deciphered for the Old Persian. Meanwhile, many more cuneiform texts were coming to light from archaeological excavations, mostly in the Semitic Akkadian language, which were duly deciphered.

By 1850, however, Edward Hincks came to suspect a non-Semitic origin for cuneiform. Semitic languages are structured according to consonantal forms, whereas cuneiform, when functioning phonetically, was a syllabary, binding consonants to particular vowels. Furthermore, no Semitic words could be found to explain the syllabic values given to particular signs. Julius Oppert suggested that a non-Semitic language had preceded Akkadian in Mesopotamia, and that speakers of this language had developed the cuneiform script.

In 1855 Rawlinson announced the discovery of non-Semitic inscriptions at the southern Babylonian sites of Nippur, Larsa, and Uruk.

In 1856, Hincks argued that the untranslated language was agglutinative in character. The language was called "Scythic" by some, and, confusingly, "Akkadian" by others. In 1869, Oppert proposed the name "Sumerian", based on the known title "King of Sumer and Akkad", reasoning that if Akkad signified the Semitic portion of the kingdom, Sumer might describe the non-Semitic annex.

Credit for being first to scientifically treat a bilingual Sumerian-Akkadian text belongs to Paul Haupt, who published Die sumerischen Familiengesetze (The Sumerian family laws) in 1879.

Ernest de Sarzec began excavating the Sumerian site of Tello (ancient Girsu, capital of the state of Lagash) in 1877, and published the first part of Découvertes en Chaldée with transcriptions of Sumerian tablets in 1884. The University of Pennsylvania began excavating Sumerian Nippur in 1888.

A Classified List of Sumerian Ideographs by R. Brünnow appeared in 1889.

The bewildering number and variety of phonetic values that signs could have in Sumerian led to an unfortunate detour in understanding the language – a Paris-based orientalist, Joseph Halévy, argued from 1874 onward that Sumerian was not a natural language, but rather a secret code (a cryptolect), and for over a decade the leading Assyriologists battled over this issue. For a dozen years, starting in 1885, even the great Friedrich Delitzsch accepted Halévy's arguments, not renouncing Halévy until 1897.

François Thureau-Dangin working at the Louvre in Paris also made significant contributions to deciphering Sumerian with publications from 1898 to 1938, such as his 1905 publication of Les inscriptions de Sumer et d'Akkad. Charles Fossey at the Collège de France in Paris was another prolific and reliable scholar. His pioneering Contribution au Dictionnaire sumérien–assyrien, Paris 1905–1907, turns out to provide the foundation for P. Anton Deimel's 1934 Sumerisch-Akkadisches Glossar (vol. III of Deimel's 4-volume Sumerisches Lexikon).

In 1908, Stephen Herbert Langdon summarized the rapid expansion in knowledge of Sumerian and Akkadian vocabulary in the pages of Babyloniaca, a journal edited by Charles Virolleaud, in an article "Sumerian-Assyrian Vocabularies", which reviewed a valuable new book on rare logograms by Bruno Meissner. Subsequent scholars have found Langdon's work, including his tablet transcriptions, to be not entirely reliable.

In 1944, a more careful Sumerologist, Samuel Noah Kramer, provided a detailed and readable summary of the decipherment of Sumerian in his Sumerian Mythology.

Friedrich Delitzsch published a learned Sumerian dictionary and grammar in the form of his Sumerisches Glossar and Grundzüge der sumerischen Grammatik, both appearing in 1914. Delitzsch's student, Arno Poebel, published a grammar with the same title, Grundzüge der sumerischen Grammatik, in 1923, and for 50 years it would be the standard for students studying Sumerian. Poebel's grammar was finally superseded in 1984 on the publication of The Sumerian Language: An Introduction to its History and Grammatical Structure, by Marie-Louise Thomsen. While much of Thomsen's understanding of Sumerian grammar would now be rejected by most or all Sumerologists, Thomsen's grammar (often with express mention of the critiques put forward by Pascal Attinger in his 1993 Eléments de linguistique sumérienne: La construction de du11/e/di 'dire) is the starting point of most recent academic discussions of Sumerian grammar.

More recent monograph-length grammars of Sumerian include Dietz Otto Edzard's 2003 Sumerian Grammar and Bram Jagersma's 2010 A Descriptive Grammar of Sumerian (currently digital, but soon to be printed in revised form by Oxford University Press). Piotr Michalowski's essay (entitled, simply, "Sumerian") in the 2004 The Cambridge Encyclopedia of the World's Ancient Languages has also been recognized as a good modern grammatical sketch.

The primary institutional lexical effort in Sumerian is the Pennsylvania Sumerian Dictionary project, begun in 1974. In 2004, the PSD was released on the Web as the ePSD. The project is currently supervised by Steve Tinney. It has not been updated on-line since 2006, but Tinney and colleagues are working on a new edition of the ePSD, a working draft of which is available on-line.