58 



MOISTURE DETERMINATION. 



The moisture, as stated in the preceding method, may also be determined by 

 drying the residue in a hot-water oven and then weighing the crucible and residue, 

 the loss being equal to the weight of the fat and moisture from which the moisture 

 may be determined. The following results were obtained and will be compared with 

 the old method by Leach: 



Comparison of moisture determinations by two methods. 



The results here, however, are not so close as in the fat determinations, but out of 

 the numerous determinations that have been carried out in this laboratory the results 

 have checked to within 0.2 to 0.3 per cent, and, in the majority of cases, within a 

 hundredth of a per cent. The following table shows a few results which will give an 

 idea of the accuracy of the method: 



Duplicate moisture determinations by new method showing degree of accuracy. 



This method has been a means of saving much time, since a large number of such 

 determinations were made during the flour investigation of the past year. 



Considerable work was also undertaken in the study of the gluten and protein 

 content of the flour, and a large number of methods were tested. Some results of 

 special interest were secured, but owing to the illness of the assistant having this 

 work in charge only progress in this direction can be reported. 



RECOMMENDATION. 



It is recommended that for the coming year special attention be given to testing 

 methods for the separation of the gluten constituents of flour, tests being made upon 

 the several grades, as patent, first and second clears, and upon flours produced from 

 different varieties and types of wheat. 



REPORT ON VEGETABLES (CANNED PEAS). 

 By W. L. DUBOIS, Associate Referee. 



The work on this subject during the last year has been confined to the examination 

 of canned peas for the purpose of distinguishing soaked peas from those canned when 

 fresh. Such a distinction of course is made with quite a degree of certainty by a 



