26 
A NOMENCLATURE OF COLORS. 
complications. In order to make comparison of allied 
shades and tints more easy, it has been endeavored to 
place all belonging to a particular class together on one 
plate ; but in not a few cases it has been a difficult mat- 
ter to decide upon which plate a certain one should be 
put, the decision being in some instances almost purely 
arbitrary. 
