TRANSACTIONS OF SECTION C. 715 



of the striatum is S. 20° E., N. 20° W., magnetic, or S. 40° E., N. 40° W„ true. 

 This is also approximately the course of the harbour. 



Produced northerly the stiiation of Point Pleasant touches the brow of 

 Blomidon on the Minas Basin. Still farther it passes through the Cobequid 

 Mountains. Produced southerly, it passes through the harbour close to Thrum- 

 Cap, the extremity of McNab's Island and into the Atlantic. 



Transportation. — In the ' Transactions of the Nova Scotian Institute of 

 Natural Science,' 1881-2, and in the ' Canadian Science Monthly,' July number,, 

 the author has given a list of nearly all the accumulations of ' Glacial Drift ' that 

 he has examined in and around Halifax Harbour. The following, however, have 

 been re-examined recently :— 



1. Thrum-Cap and the beach which connects it with McNab's Island. The 

 boulders in the drift were : (1) Boulders of Amygdaloidal rocks with zeolites, which 

 were transported from Blomidon, and Syenites, Syenitic gneisses, Diorites, &c. \ 

 from the Archaean rocks of the Cobequid Mountains was observed also a great 

 mass of quartzite grooved and striated in a striking manner, an obvious part of the 

 machine which ploughed the rocks of Point Pleasant. Ou the beach, besides the 

 abundant quartzite boulders, were boulders of common basalt, basalt with olivine 

 and amygdaloids from Blomidon. (2) Granites, micaceous, normal, and horn- 

 blendic ; Syenites, hornblendic ; Gneisses, with magnetite ; Diorites, with magnetite, 

 and Porphyrites from the Cobequid Mountains. (3) Sandstones from the carboni- 

 ferous formation of Hants and Colchester counties. • • 



2. In the drift at Point Pleasant were found a fine amygdaloid boulder of large 

 size with plenty of smaller ones, and Archaean boulders. Another large mass of 

 quartzite, strikingly grooved and furrowed, was also found. This accumulation is 

 almost in a line with the Prince of Wales' Tower. 



3. On Navy Island in Bedford Basin, eight and a half miles above Thrum-Cap,, 

 were collected (I) basalts, common and chrysolitic, amygdaloids. (2) Syenites,. 

 Diorites with magnetite, hornblendic gneisses, &c. 



4. On the opposite side were collected (1) common basalt and basalt replete 

 with' large crystals of olivine and amygdaloids. (2) Hornblendic gneisses with 

 magnetite. 



5. Not far from the top of the basin on the same side with Navy Island, and 

 two miles above it, were collected from the drift, basalt, hornblendic gneiss with 

 magnetite, porphyrites, &c. 



The Archaean boulders of these accumulations have not come from the 

 Cobequid Mountains to the Halifax Harbour over the same course as the 

 Blomidon (triassic) boulders. Thejr are a portion of the transportation which 

 had a sub-parallel course, which had been diverted from the general course S. 40° E- 

 to S. as is seen by the glaciation at Wellington Station, Intercolonial Kailway. It 

 consequently encountered the triassic transportation before it reached the harbour. 

 The united freight was carried along the harbour to the Atlantic and discharged at 

 Thrum-Cap or beyond, and then when the glacier retreated, McNab's Island, Point 

 Pleasant, George's Island, Navy Island, and other accumulations, were discharged 

 in succession. Thrum-Cap is the ultima thule of the great S.E. glacial transporta- 

 tion of Eastern Canada. 



5. Gleanings from Outcrops of Silurian Strata in Bed River Valley, Manitoba* 



By J. Hoyes Panton, M.A. 



The country north of Winnipeg is apparently a very level prairie, but there are 

 several places where Silurian beds crop out — sometimes from beneath the drift on 

 the banks of the Red River and Cook's Creek ; sometimes as rocks projecting 

 above the prairie level. The beds exposed are Limestones, which are worked for 

 ornamental and other purposes. 



There are four localities on the river banks, sixteen to twenty-one miles north- 

 east of Winnipeg, which the author groups together as yielding much the same 

 fauna; these are between St. Andrews (North) and East Selkirk. The fossils 



