They kept a diary and took samples of plants and made drawings of animals.
they kept very detailed journals
yes they did.
because he liked secrets
They used salt to sweeten and keep the meat from spoinling
Lewis and Clark kept journals so that they could report their discoveries to President Jefferson. At the time, Jefferson had just bout the Louisiana Territory and he needed to know what was over there. He chose Lewis, who was his personal secretary to go on an expedition and Lewis chose Clark to accompany him and be his second in command. They basically just needed to write down everything that would have been useful for president Jefferson.
grizzly bear
Lewis and Clark kept detailed records about the land, native Americans, weather, animals, plants, and the way the other men behaved. They were instructed by Thomas Jefferson to do so.
Thomas Jefferson had dreamed of exploring the West for at least 20 years before he even became President. In 1783 he had asked William Clark's brother, George Rogers Clark, to take on the challenge. George declined, and after the Louisiana territory was purchased, Jefferson asked Lewis. Clark would meet Lewis at Camp Dubois and introduce himself as the brother of George Rogers Clark. William had plenty of experience concerning boat navigation and had gathered a group of men to join. Lewis accepted his offer, not only for the extra manpower, but Clark would also help keep the journals and notes updated.
The original Lewis and Clark journals are kept in the American Philosophical Society library in Philadelphia, Pennsylvania. Some copies and transcriptions can also be found in various libraries and museums throughout the United States.
It is more likely that Sacagawea saved the Lewis and Clark Expedition. She led the group through her native Shoshone country and helped keep them out of danger.
Yes, they did map as well as keep journals of their experiences. They also took plant samples, made drawings, and observations.
Keep track from where though?