480 
TESTING OF BABCOCK APPARATUS. 
The Board of Agriculture have made arrangements with 
the Committee of the National Physical Laboratory for the 
examination of Babcock Milk Testing Apparatus, and they 
desire to give publicity to the following instructions and 
regulations which have been drawn up by the Committee for 
the information of persons desiring to have such apparatus 
tested, 
Regulations. 
The Committee of the National Physical Laboratory are 
prepared ‘to receive for the purpose of verification the. 
pipettes, measuring glasses, and test bottles used in the 
Babcock method of testing milk. 
The apparatus to be tested should be sent, securely 
packed, to the Director, The National Physical Laboratory, 
Old Deer Park, Richmond. ‘The carriage to and fro must 
be paid by the sender. A letter of advice must accompany 
all instruments sent for verification, which should contain the 
maker’s name, a description of the instruments sent, and full 
directions for their return. 
Great care is taken at the Laboratory to guard against loss 
or injury, but it is to be understood that all risks attendant 
on transit and safe custody are assumed by the persons who 
send the instruments. 
In the Babcock test bottles the space between two con- 
secutive graduations on the stem is supposed to contain 
o4 c.cm. The graduations will be testea at five points, and 
the bottle will be stamped as correct provided (1) the error at 
no point amounts to more than ‘or c.cm. and (2) the difference 
between the errors at no two points amounts to ‘o2 c.cm. 
