178 



Classificatio)} of Soils 



three classes Ajj, B;^ and B^., but it is only the ligliter soils of the latter 

 class that can carry sheep. 



Hop soils are illustrated in Fig. 8, and Orchard soils in Fig. 9. The 

 comparison of these two types made by Hall and iiiissell(i!i) is clearly 

 illustrated. 'J'lie orchard soils in Cjj, apart from the extreme case quoted 

 by Hall and liussell from the Weald Clay, are all grassed orchards, and 

 according to the Bristol Reports (U, 14, 55) suffer from canker to a greater 

 or less extent. Evidently these soils are really too heavy for fruit. 



In Fig. 10 a number of potato soils are shown. The limiting factor 

 for a potato soil, low content of coarse silt, is not brought out very well 

 by this method (1, lo, 2o, 41). 



-Market garden soils. 



The Biggleswade Market Garden soils (35) which are most typical are 

 shown in Fig. 11. Those which have been utilised on account of economic 

 reasons have been omitted. Hall and Russell's Merton Alluvial .soils 

 a])pr().\imate more closely to the i^igglcswade type than does the Wey- 

 bridge, but these are both more of the Market Garden type than the 

 Bagshot Windlesham and the Thanets from Swanley and Greenhythe. 



