Spectacled tern Spectacled tern The spectacled tern ("Onychoprion lunatus"), also known as the grey-backed tern, is a seabird in the family Laridae. A close relative of the bridled and sooty terns (with which it is sometimes confused), the spectacled tern is less common than the other members of its genus and it has been studied less. The three species, along with the Aleutian tern were recently split into a new genus "Onychoprion" from "Sterna" (Bridge "et al.", 2005). They resemble the sooty tern but with a grey back instead of a black one. Their breast and underparts are white, and they have
Numerology (Ismailism) Numerology (Ismailism) Numerology is an element of Ismailis belief; the idea that numbers have religious meanings. The number seven plays a general role in the theology of the Ismā'īliyya, including mystical speculations that there are seven heavens, seven continents, seven orifices in the skull, seven days in a week, seven prophets, and so forth. Old Ismaili doctrine holds that divine revelation had been given in six periods (daur) entrusted to six prophets, also called "Natiq" (Speaker), who were commissioned to preach a religion of law to their respective communities. While the "Natiq" was concerned with the rites and outward shape