122 EXPERIMENT STATION. [Jan. 



station, or by his duly designated deputy, sball thereafter manipulate 

 in this commonwealth any centrifugal machine for the purposes afore- 

 said. 



Section 4. The director of the Massachusetts agricultural experi- 

 ment station and his duly designated deputy are hereby authorized to 

 issue certificates of competency to such persons desiring to manipulate 

 the Babcock or other centrifugal machine as, in the opinion of the 

 director or his deputy, are competent to manipulate said machines. The 

 said director or his dejouty may make and enforce rules governing appli- 

 cations for such certificates and the granting thereof and may, in his 

 discretion, revoke the authority of any holder of a certificate who, in 

 the opinion of the director or of his dei)ut3', or of an inspector of the 

 said director, is not correctly manipulating any centrifugal machine 

 as aforesaid, or is using dirtj^ or otherwise unsatisfactory glassware or 

 i:tensils. 



Section 5. It shall be the duty of the director of the Massachusetts 

 agricultural experiment station, and he is hereby authorized, to test or 

 cause to be tested all bottles, pii)ettes and other measuring glasses or 

 ntensils submitted to him as provided in section one, to inspect or cause 

 to be inspected at least once each j'ear everj- Babcock or other centrif- 

 ugal machine used in tliis commonwealth by an inspector of milk or 

 cream, or by any person in any milk inspection laboratory, for purposes 

 of inspection, or by any person in any milk depot, creamery, cheese 

 factory, condensed milk factory, or other place for determining the 

 composition or value of milk or cream as a basis for payment in buying 

 or selling, and to collect or cause to be collected for the use of said 

 station the fees or actual cost of tests and inspections provided for in 

 this act. The said director, his inspectors and deputies are further 

 authorized to enter npon any premises in this commonwealth where any 

 centrifugal machine is nsed as aforesaid to inspect the same and to as- 

 certain if the provisions of this act are complied with. 



Section G. Any person hindering or obstructing the director of the 

 Massachusetts agricultural experiment station, or any inspector or dep- 

 uty of the said director, in the discharge of the authority or duty im- 

 posed npon him or them by any provision of this act, and any pereon 

 violating any of the pro^^sions of sections one, two and three of this act 

 shall be punished by a fine of not less than fifteen and not more than 

 fifty dollars for each offense. 



Section 7. It shall be the duty of the director of the Massachusetts 

 agi-ieiiltural experiment station to see that the provisions of this act are 

 complied with, and he may in his discretion prosecute or cause to be 

 prosecuted any person violating any provision of this act. But this act 

 shall not be construed to affect any persons using any centrifugal or 

 other machine or test in determining the composition or value of milk or 

 ei'eam Avhen such determination is made for the information of such 

 persons only, and not for purposes of inspection, or as a basis for pay- 

 ment in buying or selling. 



