What is "silicious bronze"

Bronze \Bronze\, n. [F. bronze, fr. It. bronzo brown, fr. OHG. br?n, G. braun. See Brown, a.]

1. An alloy of copper and tin, to which small proportions of other metals, especially zinc, are sometimes added. It is hard and sonorous, and is used for statues, bells, cannon, etc., the proportions of the ingredients being varied to suit the particular purposes. The varieties containing the higher proportions of tin are brittle, as in bell metal and speculum metal.

2. A statue, bust, etc., cast in bronze.

   A print, a bronze, a flower, a root.
   --Prior.

3. A yellowish or reddish brown, the color of bronze; also, a pigment or powder for imitating bronze.

4. Boldness; impudence; ``brass.''

   Imbrowned with native bronze, lo! Henley stands.
   --Pope.

   Aluminium bronze. See under Aluminium.

   Bronze age, an age of the world which followed the stone age, and was characterized by the use of implements and ornaments of copper or bronze.

   Bronze powder, a metallic powder, used with size or in combination with painting, to give the appearance of bronze, gold, or other metal, to any surface.

   Phosphor bronze & Silicious bronze or Silicium bronze are made by adding phosphorus and silicon respectively to ordinary bronze, and are characterized by great tenacity.