Furthermore, the authors also found contemporary newspaper accounts of Holmes delivering a lecture on chemical effects of the solar spectrum in Scotland. So Holmes was clearly interested in solar activity and was familiar with Lockyer’s discovery of helium lines in solar spectra. There is also an 1877 letter from Holmes inviting Lockyer for a visit, indicating they had a business relationship of some kind. That still did not explain the discrepancy between the reported 1841 date for the Exeter train delay and historical records. “No citation is provided that would enable an investigation into the veracity of the statement,” Wild et al. wrote.…