For a century, the neuron doctrine has been the basis for our concepts of nervous organization and brain function. Formulated in 1891 by Wilhelm Waldeyer, it stated that the cell theory applies to the nervous system. Santiago Ramon y Cajal, Spain's greatest scientist, was its main architect; his main tool was a capricious nerve cell stain discovered by Camillo Golgi. This book reviews the original papers on which the neuron doctrine was based, showing...