Drawing Techniques: a Guide
Contents
   
   
Dry Media: Combined Chalks: Black chalk and white heightening  
At an early date artists found they could achieve a rich chiaroscuro by using black chalk together with liquid white heightening on buff or blue paper, which served as a middle tone.

 

  Girolamo Muziano. Rachel (after Michelangelo). Private Collection, New York.
   
White Chalk
Black and White Chalk