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Had the edited manuscripts been published some few years ago it would have appeared in multiple hard-cover volumes and would have been called The Scientific Manuscripts of Charles Darwin. In the digital age, instead, the DMP edition provides high-resolution images and highly detailed and accurate edited transcriptions for each of Darwin's original manuscripts.
In browsing this Edited Manuscripts section of DMP, one is combing through Darwin's papers according to the emergent structure of his scientific thought and practice.
Elsewhere, in the Catalogue of Darwin Manuscripts section, in contrast, one has his papers in the exact order that they are now preserved at Cambridge.
This dual access to the archive is made possible because in the digital age the edition is based on a very extensive database. That database includes the Cambridge Catalogue of the Darwin Manuscripts, which DMP is responsible for maintaining and updating in collaboration with the Manuscripts Department of Cambridge University Library.