author
Best known for a late-19th-century philosophical work, this writer explored logic through the ideas of George Berkeley and tried to build a fresh method of dialectic. Very little biographical information appears to be widely documented, which gives the work an added air of mystery.

by D. B. McLachlan
D. B. McLachlan is the author of Reformed Logic: A System Based on Berkeley's Philosophy with an Entirely New Method of Dialectic, first published in 1892. The book presents an ambitious attempt to rethink logic by grounding it in Berkeleyan philosophy and by offering a new way to examine reasoning.
Because so little confirmed personal information is readily available in major public sources, McLachlan is known today mainly through this surviving work rather than through a well-documented life story. Modern readers are most likely to encounter the author through digitized editions and library records that have helped keep Reformed Logic in circulation.
That scarcity of biographical detail makes McLachlan an unusual figure: an author remembered less for a public profile than for a single serious intellectual project. For listeners interested in the history of philosophy, the appeal lies in that focused contribution and in the glimpse it offers into late-Victorian debates about mind, perception, and reasoning.