who came up with the doctrine of signatures
Doctrine of signatures Paracelsus (1493–1541) developed the concept, writing that "Nature marks each growth ... according to its curative benefit",[1] and it was followed by Giambattista della Porta in his Phytognomonica (1588).
Signing of the United States Declaration of Independence The first published version of the Declaration was the Dunlap broadside. The only names on that version were Congress President John Hancock and Secretary Charles Thomson, and those names were printed rather than signatures. The public did not learn who had signed the engrossed copy until January 18, 1777, when the Congress ordered that an "authenticated copy" be sent to each of the 13 states, including the names of the signers.[27] This copy is called the Goddard Broadside; it was the first to list all the signers[28] except for Thomas McKean, who may not have signed the Declaration until after the Goddard Broadside was published. Congress Secretary Charles Thomson did not sign the engrossed copy of the Declaration, and his name doesn't appear on the Goddard Broadside, even though it does appear on the Dunlap broadside.