Document status: incomplete. Quartz is a term that includes both well crystallized and compact forms of silica. For the most time the different quartz varieties have been considered as species of their own and have not been systematically grouped together before the 19th century.
Samuel Ullman (born April 13, 1840 in Hechingen, Germany; died March 21, 1924 in Birmingham) was a hardware dealer, a long-time member of the Birmingham Board of Education, a lay leader at Temple Emanu-El, and a writer whose poem, Youth, is celebrated worldwide.
Lane S. Palmer is President of Pediatric Urology Associates, and Chief of Pediatric Urology at the Cohen Childrenâs Medical Center of New York of the North Shore-Long Island Jewish Health System in New Hyde Park and Beth Israel Medical Center in Manhattan. Read Full Bio >>.