Helen Keller's letters are important, not only as a supplementary story of her life, but as a demonstration of her growth in thought and expression--the growth which in itself has made her distinguished.
Supplementary to the preceding was the Nova litteraria Germaniae collecta Hamburgi (1703-1709), which from 1707 widened its field of view to the whole of Europe.
20 and the supplementary treaty Aug.
30 a " conventicle " type of Christian fellowship, supplementary to attendance at the parish church.
Historical inscriptions, royal charters and rescripts, despatches, private letters and the general literature afford welcome supplementary information.