Apollo's Laboratory - continued...
In early 1841, Berlin physiologist and anatomist Johannes Müller gave his twenty-three-year-old medical student Emil Du Bois-Reymond a research report by Italian physicist Carlo Matteuci, a paper that had received special attention at the Paris Academy of Sciences a year ago. Du Bois-Reymond was to repeat, verify, and extend Matteuci's experiments on the electrical properties of frog muscles as described in Matteuci's Essai sur les Phénomènes électriques des Animaux. After seven years of research, the result appeared in 1848-49: Du Bois-Reymond's Untersuchungen über Thierische Elektricität [see also: Du Bois Reymond's Laboratory Notebooks].
This comprehensive text of several hundred pages described the experiments conducted by Du Bois-Reymond in minute detail. As an appendix, it offered an extensive series of plates illustrating the most important experimental set-ups, instruments, and frog preparations.
Reference: Dierig, Sven. 2002. Apollo's Laboratory.. The Virtual Laboratory (ISSN 1866-4784), http://vlp.mpiwg-berlin.mpg.de/references?id=art8&page=p0003