Philadelphia Chapter Lewis and Clark Trail Heritage Foundation

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Chapter Meeting Wednesday, March 30, 2011
Lunch at 12:15 pm
Program at 12:45 pm

A presentation by John Jengo, PG

the first reliable account"
The Scientific Influence of  Lewis and Clark's  Geological Discoveries in the American West

John Jengo will discuss the complicated history and ultimate fate of Lewis and Clark‚s mineralogical specimens, including when each shipment of specimens arrived in the East, who received and described them, whether descriptions were accurate, hypothesizing how the rocks and minerals fell into the hands of a private collector and then to the Academy of Natural Sciences in Philadelphia, and will review which specimens survive today. John will argue that the scientific content in Biddle‚s 1814 edition of the journals, though scientifically underappreciated by historians, was, in fact, valued and utilized by pioneering 19th century explorers and geologists, thus positively influencing subsequent geological inquiry.

Meeting is free. Please see our meeting announcement for more details including lunch choices and prices.

RSVP to Marion Rowen by March 27th.

Marion can be reached at (215) 624 7454.

Meeting will be held at:
Chemical Heritage Foundation
315 Chestnut Street
Philadelphia, PA  19106

The Chemical Heritage Foundation has a wonderful, free exhibit that will intrigue any Lewis & Clark enthusiast. Come early to explore!





January 2009