Imagining the brain as a book: Oskar and Cécile Vogt's "library of brains".

In 1927, the German popular science magazine Die Koralle published an article entitled "The Library of Brains." The article was about the Kaiser Wilhelm Institute for Brain Research in Berlin, established in 1914 as the continuation of the "Neurological Central Station" founded by Oskar Vogt (1870-1959) in 1898. The library metaphor plays on the huge collection of human and animal brains Oskar and his wife Cécile (1875-1862) had gathered over several decades. For examination, the brains were cut into paper-thin slices and embedded in paraffin: from one single organ, up to 30,000 slices could be extracted, which were to be "read" and studied like the pages of a book. In this chapter, we take the metaphor at face value, arguing that Vogt's institute actually functioned as a library. Numerous publications have emphasized the role of the Vogts and, in particular, of the brain collection for the constitution of modern neuroscience. The "library," however, has never been closely investigated. How was it designed? How was it filled? According to which criteria were the brains collected and ordered? How did the order and the collection itself reflect the Vogts' research program? Through a detailed investigation of the collection and the Vogt Archive, we will examine this "library" and reconstruct the order of the Vogt brains. The mutual relationship between collecting, sorting, examining and publishing about the brain will be discussed.