E. J. Russell and E. H. Richards 



513 



Heaps 



Highest temperature . . 

 Loss of dry matter % 

 Loss of nitrogen % . . 

 Of which :—NH3 

 amide 

 otber compounds .. 



N/TROGE/V 



djm3. 



d.5 /^mlde. 



zo 



dJ other 

 com))oands 



F 



Cow manure 

 3 months 

 Jan. 23 — - 



April 30, 1914 



The same re- 

 made and then 

 left another 

 3 months 

 April 30— 

 July 21, 1914 



Bullock 



manure 



3 months 



Jan. 7 — 



April 14, 1915 



The same 

 9 months 

 Jan. 7 — 

 Oct. 11, 1915 



Compact Loose Compact Loose Compact Loose Compact Loose 



9° 

 4 



Nil 



41 



0-2 



+ 4-3 



16° 



7 



7-5 



8-4 



+ 0-2 



+ 0-7 



22-5° 



9 

 14 



9 

 Nil 



5 



32° 

 26 

 30 



8-5 

 + 2 

 23-5 



30 

 26 

 11 

 1 

 14 



71' 



35 



26 



16 



Nil 



10 



5r 



47-5 

 42 

 15 

 3 

 24 



71° 



45 



32 



19 



Nil 



13 



J'8 



a 





u 



63 



Kept I^£Pt ^-^^ ^^^^ 



Ar3rflRT Co/vp/icrMo Co/ip^cr s^r /.oo^£ aa/d Ioose but 



C0Vffi£D aP05£D Co,/£ff£D. OPOSdd 



Fig. 3. Changes in nitrogen compounds in farmyard manure (bullock manure) 

 kept for three months January 7 to April 14, 1915. 



The data for the cow manure heaps are set out in Fig. 2 and those 

 for the bullock manure heaps in Fig. 3. 



These heaps show a very interesting gradation, startmg from the 

 compact cow manure heap in which all the changes are at a mmimum, 



