AGRICULTURAL EXPERIMENT STATION. 



53 



Composition of Milk Ash. 

 Ayrshire. 



Potash ... 



Soda 



Lime 



Magnesia 



Iron Oxide 



Phosphoric A cid — 



Sulphuric Acid 



Chlorine 



Oxygen equivalent to 

 Chlorine 



100 parts of ash contained. 



Nancy Avondale. 



Whole 



18.80 

 11 72 

 26.85 



3.10 



.39 



25.52 



3.21 

 13.44 



103.03 



3.03 



100.00 



Skimmed 



19708~~ 

 9.90 



27.13 



2.77 



.59 



26.53 

 3.26 



13.86 



103.12 



3.12 



100.00 



Queen Linda. 



Whole 



25.97 

 7.62 



24.05 



2.34 



.19 



30.31 

 1.38 



10.51 



102.37 

 2.37 



Skimmed 



25.79 

 7.72 



23.98 



2.53 



.31 



29.40 

 1.76 



10.99 



102.48 



2.48 



100.00 100.00 



Average. 



Whole 



22.38 

 9.67 



25.45 



2.72 



.29 



27.92 

 2.29 



11.98 



102.70 



2.70 



100.00 



Skimmed 



22.43 

 8.81 



25.55 



2.65 



.45 



27.97 

 2.51 



12.43 



102.80 



2.80 



100.00 



Jersey. 



Potash 



Soda 



Lime 



Magnesia 



Iron Oxide 



Phosphoric A cid .... 



Sulphuric Acid 



Chlorine 



Oxygen equivalent to 

 Chlorine 



100 parts of ash contained. 



Agnes. 



Whole 



21.65 

 7.79 



25.58 



2.50 



.46 



31.41 

 2.70 



10.21 



102.30 



2.30 



100.00 



Skimmed 



21.30 

 7. 65 



25.45 



2.68 



.49 



31.75 

 2 40 



10.70 



102.42 

 2.42 



100.00 



Ida. 



Whole Skimmed 



23.94 



8.94 



22.13 



2.59 



20 



32.97 



.93 



10.71 



102.41 

 2.41 



100.00 



22.91 

 8.50 



22. 93 



2.49 



.19 



32.46 

 1.92 



11.10 



102.50 



2.50 



100.00 



Average. 



Whole 



22.79 

 8.37 



23.85 



2.55 



.33 



32.19 

 1.81 



10.46 



102.35 

 2.35 



Skimmed 



22.10 

 8.08 



24.19 



2.57 



.34 



32 11 

 2.16 



10.91 



102.46 

 2.46 



This work was undertaken in part to show the differences in 

 composition which might be attributed to differences in 

 breed. It is evident, however, that analyses from a larger num- 

 ber of cows would be necessary to give any conclusive results of 

 this character. The potash and phosphoric acid seem to be the 

 most variable constituents. It will be seen that the ash from the 

 Holstein milk contains more potash than that from the other two 

 breeds. On the other hand, the Jerseys show a much larger per- 

 centage of phosphoric acid than the others. 



These differences are insignificant, however, when compared 

 with the individual differences shown in the two Ayrshire cows, 

 Nancy Avondale and Queen Linda. The small amount of potash 

 in the case of the former seems to be compensated for in part by 

 a correspondingly larger quantity of soda and lime. On the 



