ERRATA. 



Page 29. Among the synonymes of Hydrous Peroxide of Iron, for " Rhombohedral Iron 

 Ore, Jameson," and Rhomboedrisches Eisen-Erz, Mohs," read " Prismatic Iron Ore, 

 Jameson, and Prismatisches Habronem-Erz, and Prismatoidisches Habronem-Erz, 

 Mohsy 



Page 205, 4th line firom the bottom, for " P on o 137° 5' 13"," read " P on o 127° 5' 13"." 



Page 247, 19lh line from the bottom, for " o to the edge between /," read " P to the edge." 



Page 290. At the top, for "Fig. 194," read "Fig. 194 bis." 



Page 301, 10th and 11th lines from the bottom, for " k oa k 55° 4'," read "konk 155° 4'." 



Page 302, 7th line from the bottom, for " Fig. 223," read " Fig. 223 bis." 



Page 474. The reference " page 257 " should be " page 247." 



Page 477, 1st line, for " Mag. Carb. of Magnesia and Qurtz," read "Magnesian Carbonate 

 of Lime and Quartz." 



