See Also: primitive streak(medicine)
Wright, Sewall(encyclopedia)
Sewall, Samuel(encyclopedia)
streak(1)(dictionary)
streak(2)(dictionary)
streak(dictionary)
streak(encyclopedia)
streak 1, noun(dictionary)
streak 2, verb(dictionary)
fatty streak(medicine)

Sewall, Samuel (sh) and primitive streak (medicine)


Sewall, Samuel (sh)




born March 28, 1652, Bishopstoke, Hampshire, Eng.
died Jan. 1, 1730, Boston, Mass.

British-American colonial merchant and jurist.

He immigrated to America as a boy and became manager of the New England colonial printing press (1681-84) and a member of the governor's council (1684-1725). In 1692 he was appointed to preside at the Salem witch trials, in which 19 people were executed. Later admitting the error of the court's decision, he stood silently in the Old South Church in Boston in 1697 while his confession of error and guilt was read aloud. His three-volume Diary (published 1878-82) provides a view of New England Puritan life.


primitive streak (medicine)


primitive streak


An ectodermal ridge in the midline at the caudal end of the embryonic disk from which arises the intraembryonic mesoderm; achieved by inward and then lateral migration of cells; in human embryos, it appears on day 15 and gives a cephalocaudal axis to the developing embryo.

Synonym: germinal streak.