Subject: Trilobites

This is an offprint of a monograph by Jacob Green describing two new species of trilobites. The monograph is dated January 24, 1837, and is an offprint of a speech delivered that day at the Academy of Natural Sciences in Philadelphia. This particular copy is inscribed to Dr. J. J. Cohen by the author. Jacob Green was a prominent scientist who held professorships in chemistry and natural history at Princeton and Jefferson Medical College. He was a prolific publisher on trilobites and other scientific topics.

A one-page letter written by Jacob Green, Professor of Chemistry at Jefferson Medical College, to Dr. J.J. Cohen on April 4, 1837. From Philadelphia, Pennsylvania, Green discusses returning fossils to Cohen that were used in a paper presented at the Academy of Natural Sciences in Philadelphia on January 24, 1837. He also mentions sending a copy of his speech later.