54 



HATCH EXPEEIMENT STATION. 



[Jan. 



the present time. A bill has been prepared for presentation 

 at the coming session of the Legislatm^e, and it is hoped it 

 will receive the cordial support of all consmiiers, as well as 

 reputable manufacturers and dealers. 



E. Execution of the Dairy Law. 



The text of the law (chapter 202, Acts of 1901) may be 

 found in the report of this station for 1901, page 150. The 

 law naturally resolves itself into three sections : ( 1 ) the 

 testing of Babcock glassware for accuracy of graduation ; 

 (2) the examination of candidates for proficiency in operat- 

 ing the test; (3) the inspection of Babcock machines. 



Inspection of Glassivare. — All glassware found to be cor- 

 rect is marked " Mass." Ex. St.," by means of a sand blast. 

 During the first year it was necessary to inspect the ware in 

 use by all creameries and milk depots employing the test ; 

 now practically all is received from supply houses that keep 

 tested ware in stock. The total number of pieces examined 

 the present year has been 2,344, of which 5G pieces, or 2.4 

 per cent., were found incorrect. A year ago 5 per cent, 

 were found improperly graduated. Manufacturers are now 

 very careful concerning the accuracy of their product. 



In testing glassware, the following limits of error are 

 allowed : — 



Capacity. 



Single 

 Graduation. 



Limit 

 of Error. 



Cream bottles, Connecticut, 



Cream bottles, Connecticut, 



Cream bottles, Bartlett, 



Milk bottles, common, . 



Milk bottles, Ohlsson, . 



Milk bottles, Wagner, . 



Skim milk bottles, double quantity, 



Skim milk bottles, Ohlsson, 



Skim milk bottles, improved Ohlsson 



Skim milk bottles, AVagner, 



Skim milk bottles, improved Wagner, 



Pipettes, cream, 

 Pipettes, milk. 

 Acid measures, 



Per Cent. 

 30-35-40 



.'iO 



25 



10 



5 



8 



2.00 



.50 



.25 



.50 



.25 

 Cubic 

 Centimetre. 

 IS. 00 



17.60 



17.50 



Per Cent. 

 .50 



1.00 



.20 



.20 



.10 



.10 



.10 



.05 



.01 



.05 



.01 



Cubic 



Centimetre. 



Per Cent. 

 .50 



..50 



.20 



.20 



.10 



.10 



.10 



.02 



.01 



.02 . 



.01 



Cubic 



Centimetre. 



.10 



.10 



.20 



