Complex sentence: The law allowed for the notes to be hand-signed by F.E. Spinner (Treasurer), and L.E. Chittenden (Register of the Treasury), however this proved unfeasible, and Congress also authorized the notes to be signed by procurators.
Split into simpler sentences: The law allowed for the notes to be hand-signed by F.E. Spinner (Treasurer), and L.E. Chittenden (Register of the Treasury). This proved unfeasible, however, and Congress also authorized the notes to be signed by procurators.