Pitcairn, Alexander a Scottish divine who flourished in the second half of the 17th century, and appears to have been obliged to seek refuge in Holland, is known to us only as the author of, Compendiaria Physiologiae Aristoteliae unai cum Anaztome Cartesianismi (Loud. 1676, 12mo): — Harmonia Evangelica Apostolorum Pauli et Jacobi in Doctrina de Justif. etc. (Rotterd. 1685, 4to). In the last-named work, which is of a controversial nature, Pitcairn opposes Socinians, Papists, and Arminians in general, and Curcellaeus, Morus, Bull, Sherlock, and Baxter in particular. There is a good deal of learning and acuteness displayed in the book, and he deserves the study of Calvinists.