Misc: What is measured in fathoms?

Questions

Chile declares independence from Spain (National Day).?

"The New York Times" goes on sale at 2 cents a copy.?

Pacific Stock Exchange opens (as the Local Security Board).?

D.D. Palmer of Davenport, Iowa, becomes the first Chiropractor.?

Greta Garbo (in Stockholm, Sweden), actor (Ninotchka, Grand Hotel), born.?