Sergey
== Description == '''Fig. 10—Harmony of Temperament. Frederick “the Great.”''' Historical engraved portrait of Frederick II of Prussia, in Nelson Sizer, ''How to Teach According to Temperament and Mental Development; or, Phrenology in the School-Room and the Family'' (New York: '''S. R. Wells & Company''', '''1877'''), printed p. '''49'''. The title page and printed page were checked directly. The artist and engraver have not been established. The phrenological caption is retained as a histor...
