Darrow declined since he was preparing to retire, but news of Bryan’s involvement caused Darrow—who was also a leading member of the ACLU—to change his mind.
Darrow and Bryan already had a history of butting heads over evolution and the concept of taking the Bible literally, sparring in the press and public debates.
Darrow’s goal in getting involved was to debunk fundamentalist Christianity and raise awareness of a narrow, fundamentalist interpretation of the Bible. It was the only time in his career he offered to give free legal aid.
Bryan and Darrow set the tone by immediately attacking each other in the press. The ACLU attempted to remove Darrow from the case, fearing they would lose control, but none of these efforts worked.
William Jennings Bryan Arrives
The grand jury met on May 9, 1925. In preparation, Scopes recruited and coached students to testify against him. Three of the seven students attending were called to testify, each showing a sketchy understanding of evolution. The case was pushed forward and a trial set for July 10.
Bryan arrived in Dayton three days before the trial, stepping off a train to the spectacle of half the town greeting him. He posed for photo opportunities and gave two public speeches, stating his intention to not only defend the anti-evolution law but to use the trial to debunk evolution entirely.
Darrow, meanwhile, arrived into Dayton the day before the trial to little fanfare.
Scopes Monkey Trial Begins
The trial day started with crowds pouring into the courthouse two hours before it was scheduled to begin, filling up the room and causing onlookers to spill into the hallways. There was applause when Bryan entered the court and further when he and Darrow shook hands.
The trial began – somewhat ironically – with a lengthy prayer. The first day saw the grand jury being reconvened and repeating testimony from Scopes’ students who had appeared in that trial and jury selection.
Outside the courthouse a circus-like atmosphere reigned, with barbecues, concessions and carnival games, though that died down as the trial was adjourned for the weekend, during which Bryan and Darrow sparred through the press as tensions mounted.
Clarence Darrow’s Speech
It was to a packed courthouse on Monday that arguments began by the defense working to establish the scientific validity of evolution, while the prosecution focused on the Butler Act as an education standard for Tennessee citizens, citing precedents.
Darrow responded by laying out the case in an aggressive way, part of a strategy related to the defense planning to waive their closing argument and preventing Bryan’s own carefully prepared closing argument.
The statement Darrow made is considered an example of his best passionate public speaking. Darrow’s chief argument was that the Butler Act promoted one particular religious view and was therefore illegal. He spoke for over two hours.
Clarence Darrow’s Plan
The trial itself began on Wednesday with opening statements. Witnesses followed, establishing that Scopes had taught evolution and zoologist Maynard M. Metcalf gave expert testimony about the science of evolution, a signal that Scopes himself would not take the stand during the trial.
Subsequent days saw prosecutors argue about the validity of using expert witnesses. This provided Bryan with the opportunity for an extended speech on the subject. Defense attorney Dudley Field Malone then countered with a speech of his own and received a thunderous standing ovation.
The next day, the judge ruled that any experts on the stands could be cross-examined. That night, Darrow quietly prepared to call Bryan as an expert witness on the Bible.