Chessie and I invite and welcome suggestions for thematic issues, that is, issues comprised of half a dozen or so interacting papers that address some topic in the history of science before the modern era. Those interested in pursuing this, should contact either one of us. To aid us in making a final decision, we will need:

• A description of the proposed theme (1000 words or so) highlighting its significance for the history of science

• A table of contents (typically 6–8 articles)

• Abstracts of the articles

• A two-page CV from the editor or each of the editors along with short biographical statements from each of the contributors.

Further, we encourage authors to consider writing not only interpretative studies for Aestimatio but also articles devoted to sources, by which we mean editions and annotated translations of texts in the history of science that are important but not of book-length.