DUCTILITY ifrout Lat. duet/Hs, ductile. from //to)('(, to lead). That property of some material bodies by which they are capable of being drawn out in length, while diminishing in breadth, without fractio•e iun of their (:11:3••, glue-, re'.ins, and -some other bodies, when by water or befit. may be drawn into The of glass seems to have no limit ; at high tempera ture brittle -sub-statiee may he drawn into threads liner than any hair, and of the highe.t flexibility. are iluctile, generally speak ing. at any temperature, but their ductility greatly with the tymperattil•: 11ra.-.. for example—are more ductile at ordi nary than when hot. The (111,01 itv• of gold is very great 5(111 feet of Will stay be 'lilt a hied troth u110 single grain of gold. Next to follow, in the order of their ductility: siker, platinum, iron, copper. palladium. :timid nun, zinc. tin. and lead. Phitimint may he drawn ant by making a bar of silver with a platinum core. drawing olit the bar to (•xtrenie
finen•ss.. and ol• the silver Ivith nitric acids III this manner the wire. adapted to for micrometric work are made.
Saudi platinum wire is less than of an inch in Ili:1111111er. :\ Paot•FitrIrs or.
DUDEN, 1:ositAn .\txx1N111•:Ii Flt11.:11 Ill( II ( I I G4'1111:111 philologi.l. Ile wa. born near and studied philology at Ponta .\fter organizing t he gymnasium at in and combusting that in-a itution, he appointed in Iti7II ilirovlor of the gvnitta‘aillit it an institution which was pHeodV il» proted under his management. Ilis important orthograplk in•lude I (418tarithy( orthogittplitNchr N It art, Hatch (1. r (3d ed. ; a re of Friedrich 11au•r'. G•ram/.../iye der Ill it taarlu rt f ; 111111a (5(11 ed. I S96 ; 21,1. ell. of original