D. B. McLachlan is an author about whom little public information is available; the only work confirmed in our records is Reformed Logic. Judging from its title and subject matter, the book belongs to the field of logic, and the word "Reformed" suggests that its argument may relate to the Reformed tradition or to a revision and reconstruction of existing logical systems. The author's nationality, dates of birth and death, education, and biography cannot be verified, so no further inferences about the person or the scholarship should be made. On the basis of the available information, McLachlan may be regarded as a writer concerned with questions of logic, addressing readers interested in logical principles and their intellectual background. Those who wish to learn more about the style and argumentation of the work should consult Reformed Logic directly; this note is based only on verifiable facts in our records and adds nothing unconfirmed.
