MANUAL OF CATTLE-FEEDING, 465 



tlie addition of chalk or leached ashes to the fodder. "When 

 a lack o£ phosphoric acid is suspected, the use of bone meal 

 is commonly recommended. The bone should be ground 

 exceedingly fine, and even then the danger that it may con- 

 tain diseased bone is not excluded, though the latter would 

 probably be reduced by the use of bone from which glue 

 has been made, and which has consequently been cooked. 



A safer material than bone meal is chemically prepared 

 precipitated phosphate of lime, when obtainable. 



Better than either of these methods, however, is the use 

 of fodder containing more phosphoric acid. This may 

 easily be brous!;ht about by the use of some bye-fodder 

 which is rich in this substance, such as fish scrap or dried 

 blood, oil cake, or the bye-products of the grains. 

 20* 



