Show and alwran many minerals rals love lavo become ilac ica frilled slid bod capable of attracting light filter facing being heated healed or rubbed those arc am said abil to in ba or friction electric friction with ith A is i to lo excite canio electricity lo in BOIDO baltic ft at blende most tour tourmalines malines are arc 1 gain 3 for hours houra mothr 1 lose it in ia a 4 few minutes A acry cry simple nod and delcame arl cl clinin tri scope cope for lasting alir properly L m b uio malo in from a bent glass rod front from which miallo alof faili or gold leaf letfin is suspended hy by a tingle ingle fild of ailta it on approaching it a sub BUI blanco who chwi electricity lias has been ex cited basay method tho the SUPINE a tied will move toward it electricity in id or of two kinda each be adi ing the iho opposite or complement or of the lio other that excited by rubbing a glass rod with silk is called A vitreous or polk po lillo the electricity developed developed by rubbing scaling wax or sulp or wet with wool I 1 ia called 11 ell resinous or UTA niler clour aragonite Braf ionno and add acquire clec electric liy ity by loo whilst culp bur wol wet tram iram mia mis and cassirer cas ho develop positive electricity some crystals cry atala while exposed to 0 o ao an increasing temperature exhibit post tive if va C electricity I 1 c bt at some points of little surface and negative at other jolou while amic the iho temperature is falling falli og these lb ao ditl aro barged with wilh opposite op clec froc afo vito the points at which an all ascending temperature develops pool tivo tire electricity are arc ballod analogous Baa logoua poles nod those aich develop dega u LINO Q electricity under the ibe same circum et cog pole |