Usage examples (34)

• It is one of the most infusible of the metals, requiring a temperature little short of 3000° for fusion.
• -- In making alloys, care must be taken to have the more infusible metals melted first, and afterwards add the others.
• It may also occur as the amorphous non-poisonous variety, a red opaque infusible substance, insoluble in carbon disulphide.
• Before the blowpipe it is infusible, but if powdered, it slowly dissolves in the molten borax bead and yields a beautiful green globule.