chemical compound, AgCl, a white cubic crystalline solid. It is nearly insoluble in water but is soluble in a water solution of ammonia, potassium cya...
town (1990 pop. 19,163), Providence co., N R.I.; set off from Providence and inc. 1731. Long a textile town, it now has diversified industries. It was...
1868–1938, American astronomer, b. Chicago, grad. Massachusetts Institute of Technology, 1890. He founded and directed three great observatories (Ye...