174 AGRICULTURE OF MAINE. 



tributed to the same effect, emphasizing at all times the in- 

 structions to "Read labels," "Report violations" and "Submit 

 samples for analysis." The different kinds of feeding stuffs 

 were exhibited — cottonseed meal with its different grades, etc., 

 — avoiding, of course, that any particular brand should be ad- 

 vertised or discriminated against. A chemist from the labor- 

 atory at the Experiment Station was present for the entire 

 duration of the exposition and demonstrated by chemical tests 

 through the agency of fabrics the effect of analine dyes as 

 found in ice cream and carbonated beverages ; this proved to 

 be most interesting and one of the particular features, attract- 

 ing considerable attention to the booth. The simple tests of 

 extracts were also demonstrated and the result of the net 

 weight law as applied to this particular commodity was shown 

 by a display of bottles previously employed. Other work of 

 the chemist who was there was the demonstration of the acid 

 test for vinegar and the performance of the process of fat 

 extraction. 



The charts issued by the Federal Government demonstrating 

 the comparative nutritive values of the dift'erent kinds of feeds 

 were another educational feature of the exhibit ; also charts 

 showing eggs in various stages of decomposition. 



The sanitary paper ice cream dish, drinking cup and paper 

 spoon employed for dispensing ice cream were also shown, in 

 which a marked interest was noted ; also fiber containers for 

 dispensing milk and cream were displayed and successfully 

 demonstrated. 



Through the courtesy of a refrigerator manufacturer, a glass 

 front refrigerator — such as is employed in stores — was loaned 

 for the second week of the exposition and displayed. Other 

 numerous interesting features relative to milk sanitation and 

 cleanliness of milk were demonstrated by the Dairy Inspector, 

 including the use of the Babcock test, sanitary milk pails and 

 other equipment for proc^ucing clean milk. On the whole, it 

 is hoped that much good resulted from the educational features 

 of the exhibit. 



Net Weight Law. 



The net weight law was passed in 1913 and statutory pro- 

 vision of enforcement entrusted to the Department of Agri- 



