Description: The term “personal equation” came into use in the 19th century as scientists found that observers have inherent biases: some anticipate events, and some report events after they have occurred. Recognition of the problem led to a spate of personal equation instruments: some measured biases of this sort, and some reduced the effect of personal errors. Most of these
Description: [edan-image:id=siris_sic_9667,size=250,left]Robert Kennicott, born on November 13, 1835, was an original member and co-creator of the Megatherium Club and made quite a wave during his lifetime. He was considered a great naturalist, collecting specimens from his expeditions as well as local areas. Kennicott began his life in New Orleans on November 13, 1835, but his family