NOTE ON A DEPOSIT OF GLACIAL CLAY 

 AND ITS CONTENTS 



AT AN ELEVATION OF 300 FEET ABOVE O.D., MARCH, 1912, 

 ST. MARTIN'S ROAD (Behind No. 4 House). 



BY MR. A. COLLENETTE. 



Soil 



An opening was made in the back garden of the house known 

 as " Brooklyn," St. Martin's Road, and was excavated 

 to a depth of 7 feet and about 4 feet square. The 

 first found distinct layer was 1 foot 

 of soil which graded gradually into 

 underlying clay. At a depth of 4 

 feet the clay, which was soft 

 and extremely plastic, perceptibly 

 changed colour, and then ceased 

 altogether. The clay was a dirty 

 grey colour but became yellow as 

 the rain fell on it. Under the clay 

 was a soft yellow gravel of exactly 

 the colour of the gravel of St. 

 Germain, Catel. 



From the clay, as it was exca- 

 vated in layers of about 5 inches 

 depth at a time, were taken all the 

 exhibits accompanying this note. 



The small boulders and the 

 pebbles were distributed over the 

 whole deposit, but the lowest foot 

 /j contained a larger number than the 

 lywdt u PP er la yers. ^ 



Worked flints were also found, 

 there being a tendency to con- 

 centrate in the middle of the 

 deposit. 



Two pieces of bone were also found in the lower levels. 

 The bone was much worn and was a mere shell, but the curves 

 enabled it to be determined by Dr. A. S. Woodward, of the 

 British Museum, as " Pig," but the species was undetermin- 

 able. 



