Note 19 — And in Neighboring Provinces and Realms, From July, 1618, to the Present Date in 1619

Spanish, amplitud ortiva, meaning an angle measured on the eastern horizon. The term amplitude, thus used (by English writers also), is an old one in astronomical terminology. In the description of the second comet, al pie refers apparently to the head of the comet, which is here called its foot because sometimes this point was nearer to the horizon.—Rev. Jose Algue, S.J. (director of Manila Observatory).