Data from experiments on sand, sand bags, etc. and work relating to siege works, Morris Island, July-September 1863National Park ServiceTables of data from experiments measuring weights of dry and wet sand, data showing penetration of Sharps, Enfields, and Spencer Rifles and Coehorn mortar shells into materials such as sand bags, sand bags filled with cotton, facines, and pine. Also contains tables of data showing how much dirt can be dug by men in a period of time.
Deep limestone pitEverglades National Park; National Park ServiceBurned out humus in aft. deep limestone pit; wildfire #20 6-13-73; S. council fire tower
Low aerial of scorched treesEverglades National Park; National Park ServiceOn Slide: Prescribed burn; S.E. boundary fire of 3/15/80 #8006-6; 3/20/80; Breen; A-2-c; 217