COERiaENDA. 



Proc. p. 25, line 7 from bottom, for " Lausaune " read " Lausanue." 



Proc. p. 31, last line, /or " Harisron" read^^ Harrison." 



Page 255, line 4 from top, for " mountains " read " mountain." 



Page 255, line 2 from bottom,/or " sufScient to " read " sufficiently harcl^.to." 



Page 256, line 20 from top, for '• eruptions " read " eruptives." 



Page 257, line 4 from bottom, for " stock " read *' boss.'' 



Page 259, line 17 from top, /or " non-existent " read " non-resistant." 



Page 262, line 9 from top, for " besides " read " outside of." 



Page 263, line 2 from bottom, /or "magnetic" read " magmatic." 



Pages 444, 445. The section described as picrite-porphyrite has since been 



deteimined by Prof. Eosenbusch as diabase. 

 Page 447, line 11 from bottom, /or " pilotaxitic" read " hyalopilitic." 



