Obs.–0 [a. G. spalt: see SPALD v.] (See quots.)
1668. Wilkins, Real Char., II. iii. § 3. 66. Metal[s] … used for … Making of Soder, being like Tinn, but more hard and brittle.… Spelter, Zink, Spalt.
1728. Chambers, Cycl., Spalt or Spelt, a white, scaly, shining Stone, frequently used to promote the Fusion of Metals…. The English Spalt is generally very hard. [Hence in Bailey, etc.]
