ERBATA. 



Vage 332, 7th line, insert "a" after "at." 



Seite 337, Z. 6 lese man für "jetzt in thun kann," "jetzt in dieser 

 Mittheilung thun kann." 



Page 359, foot-note, for "Part III" read "page 313." 



Page 360, foot-note, for " Part I" read "page 61." 



Page 378, 8th line, for "foumed" read "found." 



