NOVA SCOTIA GEOLOGY — HONEYMAtt. 331 



this side of the harbour, in all their windings and dovetailings, 

 into the granite, and denned them on the Admiralty Charts of 

 Halifax harbour, years ago. Here the granites are strikingly 

 porphyritic ; these are inches mowtonecs. The ruts in these indi- 

 cate transportation and its direction. The deep ruts only sur- 

 vive ; air, ice and water have so affected the material of the rock- 

 as to efface fine striation. Coming to a cross road, we turned to 

 the right and at length reached the " Rocking Stone." Not being 

 altogether satisfied, I returned to the N. W. Arm the succeeding 

 Saturday and continued the westerly course beyond the bridge, 

 going along the St. Margaret's Bay road. Rocks outcropping on 

 the right side are gnessoid. I found one beautiful syenitic 

 gneiss boulder on the road. This is the only one that I have 

 seen west of H. M. Dockyard. Drift cuttings are observed with- 

 out noteworthy boulders. Approaching the Halifax water works 

 the granites which extend south to the Atlantic coast came for- 

 ward to the road. They are seen in conjunction with the gnes- 

 soid rocks. At a distance of four telegraph poles beyond the 

 four mile post, a gnessiod rock is seen on the left side of the 

 road, scooped out, with striation on the side of the scooping. 

 The position of the striation and the ferruginous character of the 

 rock, made it impossible to observe the course accurately with 

 the compass. It seemed to be about S. 20 E., N. 20 W., mag. A 

 large granite boulder rested above. The granite here is not por- 

 phyritic as that in the vicinity of the Rocking Stone ; the con- 

 stituent minerals are the same. This is granite transportation 

 No. 3. The amygdaloidal and syenitic transportation, which Mr_ 

 Hare reports on the north, seems to have been intercepted. 

 — Paper by Mr. Hare, Transactions, 1879-80. 



Cene. 

 In the lake at the Halifax water works, Mr. Keating, the City 

 Engineer, reports the existence of an argillaceous deposit, which 

 is largely composed of diatoms. Its thickness is about 6 feet 

 (To be continued.) 



