36 



MASS. EXPERIMENT STATION BULLETIN 310 



The gland scores for six succeeding examinations at schools C and D are shown 

 in Chart 7. The curve of the control school D drops from September 1930 to 

 January 1931 and then slowly rises to a high point in January of the following 

 year but drops again in June. The curve of the mean scores of school C, which 

 had the feeding, rose during the first fall, was still high in June, but dropped 

 almost to the original value in the following September. The high point was 

 attained in the second January but was not maintained, though the score in 

 June was higher than that in September. 



Why the difference in the two year's records is not clear. All records in which 

 there was indication of colds had been discarded. However, it is possible that a 



Seore 



100 



60 



50 



Chart 7. The Mean Total Gland Scores of the Children in School C (receiving evaporated milk) 

 and School A (receiving evaporated milk and tomato) Compared with School D (controls). 



severe epidemic of colds and "influenza" in school D during January and Feb- 

 ruar\- 1931 and another in school C in February and March 1932 may be reflected 

 in these scores. It is possible, too, that the economic stress which came with the 

 partial closing of the mills in the spring of 1932, so that most of the mill workers 

 were employed only part time, may have had some detrimental influence on the 

 physical condition of the children. It did not prove possible to get sufficient 

 data to determine whether this was actually true or not. 



Had only one year's records been obtained in these two schools, an improve- 

 ment as a result of the feeding would have been indicated, but the amount ob- 

 served each year would have been quite different. When the two years are 

 averaged together some of the variations are smoothed out. The two years' 

 observations of the same groups also showed that the effects of the first year's 

 feeding did not carry over the summer, for the score had dropped practically to 

 the original by September. The posterior and anterior cervical glands were the 

 ones most often found palpable. Most of the improvement indicated by the 

 total gland scores was due to the smaller number and size of these glands palpable 

 in the experimental children in January and June (Table 11). Much fluctuation 

 was found in the scores for the submaxillary glands in all groups. These changes 

 were not consistent and seemed to bear no relation to the feeding. 



