EREATA ET COREIQENDA. 



Proc. p. 80, note, line 8 from bottom, /or " M ca " read " Mioa." 



Ptoc. p. 87, last line, for " ndubitably " read " indubitably." 



Proc. p. 90, Twte, line 3, for " is" read "in." 



Page 35, line 5 from foot, /or " 180 " read " 280." 



Page 47, line 15, for " third " read " half." 



Page 47, line 16, /or " 2640" reac? "1760," and /or " double" read « treble. 



Page 65, line 12, dele " out," 



Page 69, line 7, for " orphitic " read " ophitic." 



Page 79, line 17 from foot, /or "slower" read " more rapid." 



Page 421, in legend of section, for " rhyolite" read " dacite." 



