Great Britain
German submarine from Collier's photographic history of the European War.
Geometriae pars Universalis
Three major works of Scottish mathematician and astronomer James Gregory (1638-1675) who discovered infinite series representations for a number of trigonometry functions, although he is mostly remembered for his description of the first practical reflecting telescope, now known as the Gregorian telescope. "Of British mathematicians of the seventeenth century Gregory was only excelled by Newton." (Gjertsen, Newton handbook, 245) Bound with:
