![Portraits of the Mind: slide 2](http://observatory.designobserver.com/media/slideshows/portraits_3.jpg)
Portraits of the Mind
Santiago Ramón y Cajal (1901), courtesy of Dr. Juan A. de Carlos, Cajal Legacy, Instituto Cajal (CSIC)
Drawing of the neuronal circuit found in the eye’s retina by Spanish scientist, Santiago Ramón y Cajal. By applying Golgi’s tissue-staining method with patience and virtuosity, he laid the foundations for the modern field of neuroscience.