A series of extant drawings show Dürer 's experiments in human proportion , leading to the famous engraving of Adam and Eve -LRB- NUMBER@1 -RRB- , which shows his subtlety while using the burin in the texturing of flesh surfaces .

This is a series of drawings show Dürer 's experiments in human proportion , before he made his famous engraving of PERSON@1 and Eve -LRB- NUMBER@1 -RRB- .
