The Royal College of Physicians of Edinburgh presents the James Lind Library, an online collection launched this year to mark the 250th anniversary of the publication of Lind's Treatise of the Scurvy -- "one of the earliest accounts of a fair comparison of different medical treatments." The James Lind Library serves "to introduce people to the characteristics of fair tests and to illustrate how these tests have evolved." The Web site offers online documents from dozens of books and journal articles, and new records are added regularly. The site also offers a valuable overview of the concepts of systematic review, experimental bias, and the effects of chance.