Sulnhlc doni^tlfUA'iifs III All II rial Soil. 55 



In rt'LMrd tn the distribution of the soluble matter in the 

 different hiyers, the dowmvard movement, as the result of con- 

 tinuous rain, and the less marked upward ascent during 

 drouirht. were well shown by the unmanured, slaked lime, gyp- 

 sum, nitrate of soda, bone dust, .-ind sujxTphosphate plots, 

 while the downward movement was nuM-ely lessened in summer, 

 and not actually reversed in the case of the quicklime, ammonium 

 sulphate, star phosphate, and blood manure plots. The averages 

 for the water-soiuVjIe matter in all the plots are remarkably 

 consistent with the conclusions mentioned, the surface showing 

 a fall and I'ise, 8 inches depth a slow fall, and the 16 inches an. 

 almost similar rise by the end of the year. 



* AvKKAUE Water-soluble Matter for all the Plots. 



The amount of matter soluble in dilute acid underwent a 

 secondary rise at the end of the year in the superficial layers 

 in the case of the unmanured, sodium nitrate, ammonium sul- 

 phate, bone dust, and slaked lime plots, but in all other 

 cases decreased steadily in the surface- laij^ers of soil. The 

 quicklime plot was exceptional in ^showing not only a rise in 

 the superficial layer in September, but also an increase in the 

 average for the whole 16 inches, followed by a pronounced fall 

 in December. As regards the averages, these decreased during 

 the year in all the plots excepting the unmanured and slaked 

 lime [ilots, but the increases in these were very slight in 

 amount. 



AvERAUE Matter Soluble ix Dilute Acid from all the Plots. 



May 18 Sept. 25 Dec. 20 



Surfac>' - - 4.82 - 4.69 - 4.5G 



8 inches - 4.88 - 4.52 - 4.04 



10 inches - 4.69 - 4.41 - 3.76 



The average acid-soluble matter decreases steadily on the 

 surface and more rapidly in the deeper layers, especially during 

 the summer months. 



Without claiming • anything more than a preliminary and 

 suggestive value for these data, they nevertheless may be taken 



