Sagittal ring

Definition and stakes

Portrait of Ernst Haeckel Ernst Haeckel,  Report on the Radiolaria (1887)

“ Dimensions.—Height of the sagittal ring 0.12, breadth 0.09.
Habitat.—South Pacific, Station 300, depth 1375 fathoms.
5. Semantis distephanus, n. sp. (Pl. 83, fig. 3) .
Sagittal ring thin, semicircular, smaller than the thin basal ring, which exhibits two semicircular gates. Both rings are armed with numerous small spines of equal size, which on the former are arranged in two, on the latter in three regular rows. (The basal rod of the sagittal ring, separating the two basal gates, in fig. 3 is, by mistake, not distinctly enough drawn.)
”
Source: Wikisource

F.S.A. William Jones,  Finger-ring lore

“ One is merely a piece of metal hammered flat, thinner and narrower at the ends, and formed into a circle; the ends lapping over, but without any fastening. It is entirely without ornament. In some specimens the metal is hammered and bent into the form of a ring, in the same manner as the flat one. Two rings are formed exactly like some armlets, found at the same time ”
Source: Gutenberg

Get perspective with Kwize: daily news enlightened by great literature