The index has been a key feature of the International Law Reports (ILR) since their inception in 1919. Apart from the individual volume indexes there have been five consolidated versions, each helping, by bringing related material together, to cast the jurisprudence in a new light. A sixth consolidation is in progress, running from Volumes 1–150. Maureen McGlashan, the indexer, describes the principles underlying the ILR indexing process and asks whether, with the Reports now available online at Justis, the index is any longer necessary. She also considers the role of the ancillary apparatus such as the Tables of Cases and Treaties.
