4 
G. J. Brush on native hydrates of Tron, 219 
Art. XXTI.— Contributions from the Sheffield Laboratory of Yale 
College. No. XV.—Observations on the native hydrates of Iron; 
ip osonce J. BRUSH, with analyses of Turgite by CHARLES S. 
DMAN, 
_ THE well known iron mines of Salisbury, Conn., have long en- 
Joyed a reputation among mineralogists as furnishing superior 
specimens of limonite, and hitherto this has been thought to be 
the only ferric hydrate occurring in quantity at this locality. 
Minute crystals of supposed Géthite have occasionally been found, 
Ut not in quantity sufficient to render certain their mineralogi- 
cal determination. 
_On a recent visit to these mines Mr. Rodman obtained a con- 
siderable number of specimens, lining pockets in the ore, which 
ad the usual brilliant metallic luster on the interior surface, 
Onia, the precipitate washed, dried and weighed, and on 
* Journal fiir is Chemie, xxxiii, 97. _ eee 
t Breithaupt, Vollstandiges Handbuch der Mineralogie, iii, $46. 
