280 Reports and Proceedings. 



Mr. David Forbes stated tliat the results of his own examination of some of the 

 specimens from the gold mines of this district did not quite tally with those recorded 

 in the paper, especially those of the rocks in the neighbourhood of the veins. He 

 considered that the gold in Canada was confined to the veins. 



Mr. Prestwich cited the discovery of a boulder between Stamford and Peterborough, 

 which was at least 400 feet in length, and consisted of a mass of Great Oolite. 



Mr. Searles Wood mentioned a boulder of marl in the coast section near Cromer 

 upwards of 300 yards in length and 60 feet in height. 



Mr. Wallbridge, in reply, stated that the rock must have come at the least twenty 

 miles from its original home. The surface of the Trenton limestone rock in the 

 neighbourhood was striated in the direction of the boulder. There was no evidence 

 of intrusion. The mass was traversed in two or three places by crevices. 



2, "On the distribution of Flint Implements in the Drift, with 

 reference to some recent discoveries in Norfolk and Suffolk." By 

 J. W. Flower, Esq., F.G.S. 



The author noticed some recently discovered localities in the 

 valley of the Little Ouse which have yielded Flint Implements, viz. 

 at Broomhill, about 350 feet from and five or six feet above the level 

 of the river ; at Gravel Hill, about one mile from, and ten feet above 

 the river ; at Shrub Hill, about one mile from, and only a foot or two 

 above the river; and at Lakenheath, nearly three miles from the 

 river, and sixty feet above it. In the first three of these localities 

 the worked flints are in coarse gravel, resting immediately on the 

 Cretaceous beds (Chalk in the first and second, Gault in the third), 

 and overlain by regular deposits of gravel and sand. The imple- 

 ments resemble those of Acheul, Thetford, and Salisbury, but pre- 

 sent some peculiarities, from which the author inferred that each 

 place had its own workmen, and that the different forms were 

 intended to answer different purposes. At Brandon implements 

 formed of quartzite were found in a bed consisting of rounded 

 quartzite pebbles mixed with about one-fourth of flints. Flint 

 implements occurred beneath this bed. 



The author indicated the geographical characters of the district 

 and the peculiarities in the distribution of the flint implements, 

 which he regarded as in accordance vsdth the phenomena presented 

 by the valley of the Somme ; and he argued from the consideration 

 of all the facts that the implements were not transported to their 

 present situation by the agency of the rivers in whose valleys they 

 occur, but that they were made upon the spot, exposed upon the 

 surface with the gravels with which they are found, and from which 

 they were made, and finally covered np by the river-gravels and 

 sandy beds which now overlie them. 



Discussion. — Mr. Prestwich dissented ft-om the author as to many of his conclu- 

 sions. There were in the district drained by the Eiver Ouse beds of gravel belonging 

 to the Boulder-clay series, from which the quartzite pebbles described might have 

 been derived. The author had not taken into proper account the formation of the 

 valleys by erosion, and it was a mistake to suppose that others had not also attributed 

 the formation of the implements to the close proximity of the spots in which they are 

 found. The implements were not limited to the lower part of the gravel, though 

 principally occurring there, but occurred even above the seams of river shells. He 

 inquired whether the gravel between the Little Ouse and the Wissey might not 

 belong to the Boulder-clay series. 



Professor Eamsay agreed with the author that flint implements might be found in 

 other localities than those in the neighbourhood of rivers. He protested against 



