United States or North Macedonia ? Vote for the TOP Country of the Week !
Ermann and Ledebur explored Siberia; Klaproth, Kupfer, Parrot, and Eichwald, the Caucasian provinces; Burckhardt, Rueppell, Ehrenberg, and Russegger, Syria and Egypt; the Prince von Neuwied and Paul William, duke of Wuertemberg, North America; Becher, Mexico; Schomburg, Guiana; the Prince von Neuwied and Martius, the Brazils; Poeppig, the banks of the Amazon; Rengger, Paraguay.
From trials conducted by Ledebur, it appears that cast iron is rendered suitable for foundry purposes i.e., to fill the moulds well and to yield sharp and definite forms free of flaws, to be cut with a chisel, and turned on a lathe through a certain percentage of graphite, whose presence depends on that of carbon and silicium.
Word Of The Day