364 



LIVE-STOCK RULES AND RECORDS 



Apparatus required. 



Babcock tester, not less than 10-bottle size, and if to be used in a 

 creamery where steam is available, at least 24-bottle size. Babcock 

 glassware (state brand). At least twice as many test bottles as the 

 capacity of the machine, with acid measure, pipettes, thermometer, etc. 



Sulfuric acid, about a pint or two pounds per cow per year. 



Sixty-pound spring balance scales, graded to tenths. 



As many wide-mouth sample bottles as there are cows in the largest 

 herd to be tested. Each bottle should be supplied with a numbered 

 metal band, or otherwise plainly and durably labeled. 



A supply of record blanks, ruled so that the whole record for a cow 

 for a year can be entered upon it. 



The cost of the above should be approximately as follows : 



Wages of man one year at $50 per month $600.00 



10-bottle Babcock tester, $10, M original cost each year .... 



Extra glassware and breakage 



125 gal. sulfuric acid at 55 cents gal 



1 set spring balances 



4 dozen sample bottles . 



Record blanks . . , 



2.50 

 10.00 

 67.75 



5.00 

 10.00 

 20.00 

 $715.25 



Value of cow-testing associations in Virginia (Virginia Bulletin 190) 



