NEW BRUNSWICK. 373 



The statements previously given in Dr. Hunt's "Azoic Rocks," in 

 regard to the geology of New Brunswick, were repeated in essentially 

 the same form in 1879 (Proc. Am. Assoc. Adv. Sci., XXVIII. pp. 285-287; 

 Am. Jour. Sci., 1880, (3) XIX. pp. 273-275), together with this remark 

 regarding the lower and upper divisions of the Coldbrook group : — 



" In a joint report of Matthews and Bailey in 1865, these rocks were declared 

 to be overlaid unconformably by the slates in which Hartt had made known a 

 Lower Cambrian (Menevian) fauna, and were compared with the Huronian of 

 Canada." 



This again is in part incorrect ; for if Messrs. Bailey and Matthew de- 

 clared anything in 18G5, it was that the St. John group was conformable 

 with the Coldbrook group, or nearly so, and they are so represented in 

 their sections.* Furthermore, in Matthew's paper, published in 1865 

 (Quart. Jour. Geol. Soc, XXI. p. 425), the St. John gi-oup is said to con- 

 formably overlie the upper division of the Coldbrook group, and this 

 same statement is made in the Report of Progress of the Canada Geo- 

 logical Survey (1870-71, pp. 59, 136). 



Dr. Hunt, in 1873, remarked concerning the work of himself and 

 Messrs. Bailey and ]\Iatthew, that he regarded the ancient crystalline 

 rocks in Southern New Brunswick 



" as for the most part the equivalents of the Green Mountain and White Moun- 

 tain series, or what he calls Huronian and Montalban. These are penetrated 

 by granites, and associated in one part with Xorian rocks, but the presence of 

 Laurentian in the region is somewhat doubtful." (Proc. Am. Assoc. Adv. Sci., 

 1873, XXII., B., pp. 116, 117.) 



In 1875 it appears that Dr. Hunt held that the limestones in the 

 vicinity of St. John were of Montalban age. (Proc. Bost. Soc. Nat. Hist., 

 1875, XVII. p. 509.) In 1878 these limestone rocks (the Portland series 

 of Matthew) are referred to the Taconian, and the gneiss (Laurentian) 

 to the Montalban, by the same writer. (Proc. Bost. Soc. Nat. Hist., 

 1878, XIX. p. 278 ; Preface to the Second Edition of the Chemical Geo- 

 logical Essays, p. xxii. ; Azoic Rocks, p. 181.) 



From the above it seems that L)r. Hunt would not admit as proved 

 the presence of any Laurentian, but would take the limestones belonging 

 according to Matthew to that formation and place them above the Cold- 

 brook group as ^lontalbau and Taconian. Dr. Hunt's statements seem 

 to have no substantial basis of facts ; they are mere lithological specula- 

 tions. Instead of trj'ing to ascertain whether his theories are correct, 



* Observations on the Geology of Southern Xew Brunswiek, pp. 29, 31, 50. 



