Page:Quarterly Journal of the Geological Society of London, vol. 26.djvu/660

 Mines in his Report for last year* : — " The most noticeable feature in this district is the tracing of the southern outcrop of the celebrated Tudor Lode, by a series of openings connecting two points 1100 feet distant, and thus proving the correctness of the views entertained by Professor Hind of the geological structure of this district, as described in his report and fully exemplified in the map accompanying that Report."

They are also noticed by the Inspector of Mines, who states : — " The trending of the strike of this lode towards the north and east has been followed from the shafts to within a few feet of the old workings on the Tudor Lode ; - and its identification with that lode has been established, and the construction assigned by Professor Hind to this part of Waverley district confirmed "†.

EXPLANATION OF PLATE XXX.

Fig. 1. Map of parts of Halifax and Hants counties, Nova Scotia, showing the outcrop of the Gneissoid series and the position of the Gold-districts. Scale 12 miles to 1 inch.

Fig. 2. General section from Lawrence Town to Windsor (line A-B in fig. 1).

Fig. 3. Sketch section from the Atlantic at Halifax to the St. Lawrence, showing four Laurentian axes.

Fig. 4. Map of part of Guysborough county, Nova Scotia, showing the outcrop of the Gneiss and the'position of the Gold-districts. Scale 8 miles to 1 inch. (The names of the gold-districts are in capitals, with lines above and below them.)

Fig. 5. Section from Cochran's Hill to Burns Tilt (line A-B in fig. 4).

Fig. 6. Map of part of New Brunswick between Bay of Chaleurs and the State of Maine, showing the disposition of the Gneissoid series. Scale 26 miles to 1 inch.

Discussion.

Principal Dawson spoke in confirmation of the fact that the Palaeozoic rocks are underlain by Laurentian gneiss &c. quite to the eastern coast of British Worth America, and stated that the same relation occurred in Newfoundland, and had been traced southwards into Massachusetts. He confirmed Mr. Hind's views generally, and stated that the Lower Silurian of Nova Scotia includes no great fossiliferous limestone like that of the interior of North America. The supposed Eozoon discovered by Dr. Honeyman was probably distinct from E. canadense, but was certainly a Foraminiferal organism allied to Eozoon ; but as Eozoon bohemicum is of later date than E. canadense, the presence of Eozoon did not necessarily indicate Laurentian age.

Prof. Ramsay suggested that other organisms besides Eozoon aided in building up these great calcareous masses. He inquired as to the mode of occurrence of gold, and suggested that the gold is obtained at the anticlinals merely because the exposure is better, and that it will be found to pervade the synclinals also.

Mr. Henry Robinson had visited the Waverley district, in com-

for the year 1869, p. 9 : Halifax. 1870,
 * Report of the Chief Commissioner of Mines for the Province of Nova Scotia

† Ibid. p. 38.