ADDITIONS AND CORRECTIONS. 



P. 6, note for "thas " read "that." 



P. 17, Hue 8 for "pa " read "pan." 



P. 22, line 11 for " fluorhydric " read " hydrofluoric." 



P. 51, insert in bracket 18 BB, on charcoal, white incrustation and arsenical 



odour Mispickel (some varieties), No. 22. 

 P. 57, insert at the commencement of the " not malleable" series Tin-white 



or greyish. BB, arsenical odour Mispickel (some varieties), No. 22. 

 P. 61, line 1 for "SIMPLE SUBSTANCE" read "SIMPLE SUB- 

 STANCES." 

 P. 64, line 15 add : " Gold occurs also in many of the veins around Big Stone 



Bay, Lake of the Woods ; and quite recently it has been discovered in 



the township of Dennison and elsewhere in the Huronian rocks of the 



Sudbury district." 



P. 64, line 28 after Riviere du Loup, add (Beauce Co). 

 P. 71 add Sudbury to the localities of Purple Copper Pyrites. 

 P. 76, line 13 for "Cape Ibberwash" read " Cape Ipperwash." 

 P. 84, line 15 for "altered Silurian" read "crystalline." 

 P.P. 90, 91 The figures of crystals on these pages are placed in reversed 



position. 



P. 90, line 8 from bottom for "from" read "form." 

 P. 93, for "distinct" read "distinctive." 

 P. 99, line 2 for " iron is " read "iron oxides ore." 



P. 104, lines 7 and 8 from bottom erase " or Upper Laurentian strata." 

 P. 110 transpose lines 5 and 6. 



P. 110, line 15 for "Nepheletic" read " Nephelitic." 

 P. 115 add Sheffield to localities of Phlogopite. A valuable deposit of this 



species of mica has been recently discovered in the township. 

 P. 126, line 6 from bottom for "or" read "of." 

 P. 127, line 2 for " Bentick" read " Bentinck." 

 P. 128, last line for " chlorite " read " chloritic." 

 P. 130, line 8 from bottom for " from " read " form." 

 P. 148, line 4 for "more limited" read "a more or less limited depth." 

 P. 149, line 26 for " exhibit " read "exhibits." 



P. 163 the cut, figure 88, is placed incorrectly. The lettering shews its pro- 

 per position. 

 P. 169, line B add : a very fine-grained variety, with predominating feldspar, 



has been named granulite or feldspar-rock. 

 P. 172, line 11 for " agillite " read " argillite." 

 P. 172, line 24 for " Huronian rock " read "Huronian rocks." 

 P. 173, line 5 from bottom for " from " read " form." 

 P. 189, line 17 add "at" before "Gros Cap." 

 P. 191, line 22 for " are not uncommon " read " have been fouud." 



