114 REPORTS ON THE STATE OP SCIENCE. 



fully exhausted, I continued the excavations in the summer of 1909. 

 These excavations form the subject of this third communication, which 

 is final so far as this grant is concerned. 



The excavations of 1909 extend beyond the limits of the sketch map 

 originally printed, and necessitate a new one (see Plate III.). On this, 

 the positions of all the principal excavations are shown by bold numbers. 

 Where a clear dip has been observed, the exact position is indicated by 

 the point of the arrow, but where the dip is uncertain the position is 

 marked by a black dot. In addition to the lines of all roads, fences, 

 streams, and footpaths, contours have, been sketched in at intervals of 

 20 feet vertical, and a little shading has been added to bring out the 

 relief of the surface. The tracks of some of the principal faults, seen or 

 inferred during the progress of the excavations, are shown by dot-and- 

 dash broken lines, and the general positions of the rocks of various ages 

 bounding the Comley Cambrian area are indicated in words. 



With the exception of No. 27, which comes in the central portion of 

 the Comley area, the excavations now to be described were made in two 

 distinct parts of the area — (A) the Shoot Rough side, to the north-east 

 of the quarry; (B) the Robin's Tump portion, to the south. 



Excavation No. 27, Francis' Field. 



Near a farm south of Dairy Hill and east of Hill House Ridge, there 

 is a small prominence on which the soil indicates that rock is near the 

 surface. An excavation was made on the west slope, and disclosed 

 some 4 or 5 feet of very broken shale, with obscure indications of a 

 northerly strike and a high westerly dip. No fossils were discovered, 

 and further exploration near this point was deferred until other more 

 promising excavations had been disposed of. 



A. — The Excavations on the Shoot Rough Side. 



The report to the Winnipeg Meeting gave details of the beds called 

 Shoot Rough Road Shales and Shoot Rough Road Flags at excavations 

 No. 20 and No. 21. Leave having been obtained to make openings in 

 the fields north of the road, these excavations were extended, and addi. 

 tional trials were made with a view to ascertain, if possible, the nature 

 of the rocks between the Shoot Rough Road beds and the supposed 

 Tremadoc of Shoot Rough Wood. 



Excavation No. 20, Shoot Rough Road, Upper Section 1 (Extension oj). 



A trench was dug at right angles to Ihe strike from the highest beds 

 of shale previously observed. The shale was followed for a horizontal 

 distance of 13 yards, where its surface sank out of sight under the 

 thickening covering of drift. Allowing for the dip of 45° to the north- 

 east, the thickness of shale seen would be about 40 feet, and in this 

 no fossils were discovered, nor was there any change in the general 

 character of the rock. 



1 Brit. Assoc. Eeport, 1909 (Winnipeg), p. 184, 



