ON DIMORPHOUS BODIES. 189 
IV. 
to exist in two states physically different, but of which the cry- 
have not been determined. 
Colour in mass, |Colourin powder.) Transparency. Characteristic or Remarks. Authorities. 
‘| Yellow ......) Yellow ...... Transparent | See Table I. 
BOWN  ......|-000ee cebu avers .| Opaque ...... After about 24 hours the sul- 
phur generally becomes 
: hard and brittle 
Pale Yellow...| Yellow ...... Transparent | It is only when very pure, 
and repeatedly distilled, 
that it becomes black by 
sudden cooling. On refu- 
sion it becomes yellow 
Black ......... ? Opaque ......!. ep esescebcoce ce “KCASEEE EA O-Eee cue 
Thenard An. de Chimie, 
Ixxi. p. 109. 
Dumas Traitéi. p. 247. 
Fuchs Annal. de Phar- 
Lead grey ...| Greyish black} Opaque ...... Thesecond state B. Fuchs has 
mac., xi. p. 282. 
distinguished by the term 
Amorphous, a term, as it 
appears to me, by no means 
applicable 
Do. ...| Reddish Thin lamine| 
brown transpar. ; 
deep hya- 
cinth red * 
Cochineal red} Scarlet red ;} Semitranspa- |.......... Bape eaecewasvts Secawaclssa’s Fuchs, Ibid. 
Carmine rent 
when heated 
Black .........| Black ......... Opaque ?...... Gmelin attributes the black} Gmelin’s Handbuch, i. 
colour to the presence of| p. 1290. 
sulphur 
Red............) Yellow ......| Transparent | The fused Bichromate on| Liebigand Poggendorf, 
cooling shoots out into} Wéorterbuch,i. p. 151. 
crystals, which again fall 
to pieces after the tempe- 
rature has sunk to 60°F. 
|} Yellow DOs onseer Do. 
_ while hot 
‘Dark green...| Green..... ... Do. On cooling, the fused mass 
: crystallizes, contracts, and 
finally expands, swells up, 
= and falls to powder eS 
‘Pale green ...| Do. ........ Do. Eads ertunetareeceeattmscts sace .-.| Herschel, Berz. Arsbe- 
rattelse, 1832, p. 142. 
