FARM LANDS OF NEW SOUTH WALES. 



:::, 



Tabi.k showing Average Composition of Soils — continued. 



COUNTY CUMBERLAND. 



The rocks which form the county of Cumberland belong to what is known 

 as the Hawkesbury series, and may be roughly divided into two portions, 

 the first including those obtained from the area lying between Sydney and 

 Penrith, east and west, and the Kurrajong and Picton, north and south, 

 which rest upon, and are for the most part derived from Wianamatta shale ; 

 the second division, including those from the rest of the county of Cumberland, 

 derived principally from the Hawkesbury sandstone. Both the formations 

 from which the Cumberland (-oils are derived are remarkably poor in 

 constituents suitable for plant-food ; it is consequently not to be expected that 

 the derived soils should be rich in fertilising ingredients. Of the ingredients 

 of which the Hawkesbury sandstone is composed, felspar is the only one 

 whose disintegration provides any lime or potash, and we should expect to 

 find very little phosphates, these salts being quite unrepresented in the 

 original rock. " - -■•- rsoMUI " ^ B0 ;'. "] M5j ,'' i ' ' :.Jpf - • - ..„.-..-...,. gjj j 



The following analysis of Hawkesbury sandstone represents the average 

 composition of this rock : — 



Analysis of Sandstone from Pyrmont — Representative of the Hawkesbury Sandstone. 

 Moisture at 100 deg. Cent.... "45 Potash -28 



