10 Mr. A. D. Hall and Dr. N. H. J. Miller. [Mar. 30, 



Table V. — Hoos Field Barley Soils, collected at various dates. 



Calcium Carbonate per cent, in Fine Soil dried at 100° C. 



Plot. 



Manures. 



1868. 



1882. 



1904-5. 



1st Depth (1 — 9 inches). 



lo 





Per cent. 

 1 -78 

 1-34 

 1-30 



Per cent. 

 3-43 

 1 -47 

 3-26 

 0-87 

 3 -30 

 1 -32 

 1 -58 

 1 -92 



Per cent. 

 2-34 

 -71 

 2 -53 

 0-23 

 2 -59 

 0-48 



0- 89 



1- 14 



4o 





lA 



4a. 



In 



4n 



Ic 



7—2 , . 



Full minerals + 200 lbs. ammonium salts ... 



Full minerals + 275 lbs. nitrate of soda 



1000 lbs. rape cake 



2nd Depth (10—18 inches). 



lo 





o-iio 



0-154 

 0-064 



0-107 

 0-091 

 0-116 

 0-074 

 0-107 

 0-073 

 0-095 

 0-275 



0-202 

 0-139 

 0-119 

 0-083 

 0-112 

 0-112 

 0-066 

 0-147 



4o 





lA 



4a 



In 



4n 



Ic 



7—2 



200 lbs. ammonium salts 



Full minerals + 200 lbs. ammonium salts ... 



Full minerals + 275 lbs. nitrate of soda 



3rd Depth (19—27 inches). 



lo 





0-094 

 096 

 0-063 



0-056 

 0-081 

 0-063 

 0-090 

 0-075 

 0-061 

 0-068 

 0-074 



0-078 

 0-091 

 0-062 

 -073 

 0-084 

 0-103 

 0-067 

 0-103 



4o 





lA 



4a 



In 



4n 



lc 



7-2 



Full minerals + 200 lbs. ammonium salts ... 

 Full minerals + 275 lbs. nitrate of soda 



Unfortunately the figures show at once that the initial chalking of the 

 Hoos Field has been very irregular, the plots numbered 1 show more 

 than twice as much calcium carbonate as the corresponding plots numbered 4. 

 As also in this field, samples only exist for two dates, 1882 and 1904 — 5, 

 instead of the four which are available for the Broadbalk Field, less weight 

 can be laid on the results for the individual plots. It is, however, noticeable 

 that it is one of the plots receiving ammonium salts every year which now 

 contains the least calcium carbonate. 



