AGRICULTURAL KXPERIMENT STATION. 



•203 







- £ •- S = 1 









= - io 



Nitrogen in residue after addi- 







= su c a..£, 



tional treatment with Cold lime 







iLc - 5 £ ^ 



.- 2 bo - 2 = 

 >^-9'-5 z-5 a. 



water. 





Ih. 



2 hrs 4 hrs. 



6 hrs. 



<0 hrs. 







% % 



% 



% % 



% 



XLir 



White clover hay 



.4H 



- 



- ' 



.46 





LI 



Timothy hay 



.41 .i.'> 



\ -^s 



.42 ; .43 



.4(1 



.39 



As has bt'(-n obsi-rved. the fli^jpstion with a pepsin sohilion 

 extracis iiKjre fecal nitrogen than method B. Does method C 

 extract too mucli? It now stems to the writer that there is some 

 rea-on for thinking that it does. By method B tlie nitrogen 

 exiracied is that which is readily and immediately dissolvi d, while 

 the pepsin solution continues to remove an increasing qianlitv np 

 to 24 hotir;?' digestion, and perliaps farther. This matter viA<, made 

 the subject of hut one ex|)eriment The feces from LI were treated 

 with pepsin solution for six. twelve, eiiihteen and twenty-four hours, 

 the nitrogen in the water-free residues being 1.19, 1.08. 1.04, and 

 .9'J per cent respectively. 



Again the results bv method C average considerably higlier tij.iii 

 l)y methods B and D (pepsin-pancreas digestion), while the two 

 latter agree closely with each other. 



Neatly twenty digestion experiments are now being planned fur 

 the next year's woik at this station, and an effort will be made to 

 so increase the data bearing on tlie main points here presented, 

 that more definite conclusions can be reached. 



