398 PROFESSOR HUGHES 



^change Emmanuel 



College 



Trinity 

 Hall. 

 WNW 



Gaalt. 

 Fig. 7. Section drawn E.S.E. and W.N.W. from Emmanuel to the river. 



The relation between these deposits is further illustrated 

 by the section (fig. 7) drawn from Emmanuel College through 

 the Corn Exchange to the river near Trinity Hall. Emmanuel 

 College stands on the margin of the higher terrace of gravel 

 which spreads from Barnwell by Parker's Piece and slopes 

 down St Andrew's Street to Christ's College. There are of 

 course places over this wide area where rubbish has been shot 

 and old gravel pits filled up, but there has been no deliberate 

 raising of the ground by carting waste material on to it. 

 The line of the section crosses a low place in the gravel near 

 the Post Office which, as we shall see, is probably in the 

 outfall from the Downing springy ground, and has been taken 

 advantage of to carry the King's Ditch along, from the New 

 Museums to Sidney Sussex College. West of this comes the 

 once relatively higher ground of Peas Hill and Market Hill, 

 over which there is some made earth derived from middens, 

 ruins, and all the natural growth of soil in the centre of a 

 town, where improvements, rebuilding, levelling, etc., have 

 long been in progress. In the next place the section crosses 

 King's Parade near Great St Mary's Church. The foundations 

 of houses were exposed during draining operations at a depth 

 of 12 feet below the existing street, and dwelling houses are 

 known to have stood until quite recent times along the west 

 side of King's Parade. At the back of these however the 

 natural surface of the ground fell rapidly to the river and the 



