Can the principle of convergence in three spatial dimensions be reflected in drawings by the congenitally blind? A man who had been totally blind since birth was asked to draw scenes such as a tabletop with three cubes receding to the observer's left side. He used converging lines to show the tops of the cubes receding in depth. He drew the cubes to the left smaller than the cube in front of th...

The purpose of this article is to describe the research of Nicolae Constantin Paulescu and to emphasize his role in the discovery of insulin. METHODS We made a thorough review of the literature and research in the Romanian Academy Archive in order to find adequate references. RESULTS In 1912 N.C. Paulescu analysed the clinical and biochemical alterations in diabetic patients and in dogs aft...