20 NEW HAMPSHIRE EXPERIMENT STATION [Bull. 261 



found in the piintry- and had less spending money to buj- sweets and 

 other extra foods than some of the other groups of students. 



The average factor. 4.9, for the calories per gram of air-dry matter 

 in the edible waste at Sorority House S-1 is nearl}- identical with that 

 found for the waste at the fraternity house. 



At House S-1 duplicate, composite samples were obtained of the 

 lunches and dinners served on most of the daj^s during the same two- 

 week period when waste sample.? were secured. The lunch and dinner 

 for each day were placed in a weighed container and dried together. A 

 duplicate lunch and dinner for the same daj- were dried in a second 

 container. The samples were saved by a student who worked in the 

 kitchen and waited on table, and were in her estimation representative 

 of the average helpings of the \-arious foods taken by any one girl from 

 the different serving dishes. The results are given in Table 3. Sample 

 702 contained two lunches, and Sample 703 two dinners, due to error. 

 Samples 714 and 715 on January 18 each contained one lunch only. No 

 dinner samples could be obtained on that day because of unexpected 

 guests. No samples were collected on January- 17 and 19 for the same 

 reason. Samples 738 and 739 each represent one dinner only, since Jan- 

 uary 26 was a Sunday and no lunch was served on Sundaj'. The results 

 of the analyses on Januarj' 18 and 26 have not been included in aver- 

 aging the data for the protein and the caloric content of the combined 

 lunch and dinner samples. These meal samples included bread but no 

 butter or beverage. Breakfasts at House S-1 consisted simplj- of fruit, 

 coffee, muffins, and butter. Prepared cereal was kept in the pantrj'', but 

 was I'arely requested. Little milk was consumed as a beverage at any 

 meal. This study shows that, on the ten days when both lunch and 

 dinner samples were secured on the same daj- (that is, excluding Jan- 

 uary' 18 and 26), these young women obtained on the average in their 

 lunch and dinner each daj- 44 grams of protein and 1200 calories per 

 I)erson. exclusive of butter and beverage. These amounts might have 

 been increased by second heli)ings, no records of which were kept. Ab- 

 sence of samples for the breakfast makes comparison with the data re- 

 garding the total waste difficult. The calories per gram of air-dr\' mat- 

 ter in the lunches and dinners averaged 4.7. 



Vnijormity in duplicate sam-pling. On nine of the days listed in 

 Table 3 dujilicate samples, representing a combination of lunch and 

 dinner, were secured. A comparison may, therefore, be made of the 

 analyses of these duplicate samples to determine whether there was uni- 

 formity in the samiiling. Comparison of the total energy and the total 

 protein content in the duplicate samples on those nine days can be 

 made by inspection of the detailed data in the fifth and seventh columns 

 of Table 3, but for convenience these values have been simimarized in 

 Table 4. One sees that on the whole the duplicate samples had much 

 the same energy and protein content. In only a few instances do the 

 values for duplicate samples differ appreciably. Thus, on January' 21 

 the protein content was 50.8 and 43.3 grams, respectively, in the two 

 samples and the energy content 1250 and 1190 calories; that is, the 



