EXPERIMENT STATION REPORTS. 217 



American Chemical Society, and a tliird paper dealiug witli tlie tlieory 

 of hydrolytic adsorption is being prepared. The data in these papers 

 clearly indicate (1) that hydrolysis is an important factor in adsorp- 

 tion, (2) that there is a close relationship between adsorption and 

 chemical constitution, and (3) that the erroneous and contradictory re- 

 sults found in the literature are due to impurities in the reagents used. 



Experiments with fuller's earth and kaolin, carried out in the light 

 of the knowledge gained in the charcoal adsorption studies are yielding 

 interesting and significant results. 



Adams 2 ba. — ''A study of the organic compounds in peat soils." The 

 work has been carried on along the lines planned last year, but the col- 

 lection of material for this work was not completed because of inability 

 to locate deposits containing certain types of peat. It is hoped to com- 

 plete the collection of samples at an early date when active work will 

 again be started on the project. 



HATCH FUND PllOJECTS. 



"The preparation of neutral ammonium citrate solutions." This proj- 

 ect has been completed. The final results obtained were published in the 

 Journal of Official Agricultural Chemists, Vol. 6. p. 384. The method for 

 the preparation of neutral ammonium citrate developed under this 

 project has been adopted by the Association of Official Agricultural 

 Chemists and at the next meeting it will be made the official method of 

 the Association. 



"A study of the availability of organic nitrogenous substances." 

 Considerable work has been done during the year and a modification of 

 the method now being used for determining the availability of organic 

 nitrogenous substances is being prepared for publication. The project 

 will be continued as outlined. 



"Michigan Wheats and Flours." Twenty-one samples of wheat repre- 

 senting the more important commercial varieties grown in Michigan were 

 supplied by Prof. Spragg. These were analyzed and ground into flour. 

 The flour was then analyzed and tested for baking quality. The protein 

 content of the wheat varied from 9.82 per cent to 14.00 per cent and the 

 protein content of the flours from these same wheats varied from 8.98 

 per cent to 12.65 per cent. The baking tests were conducted by Mr. O. B. 

 Winter and very marked differences as to bread making properties were 

 demonstrated. This work will be continued and greatly amplified dur- 

 ing the coming year. 



MISCELLANEOUS. 



A great deal of work has been done for other sections of the Station 

 during the year, which is briefly summarized as follows : 



For the Farm Crops section — Two hundred samples of sugar beets. 

 These were tested both as to sugar content and purity of the juice. 



Two samples of potatoes, one from a normal hill and the other from 

 a hill infested with "giant hill" disease. 



Nine samples of sunflower silage grown at the Upper Peninsula Sta- 

 tion. Twenty-five samples of flax were analyzed for total ash, . soluble 

 and insoluble silica. 



Twelve samples of corrosive sublimate solution used in treating seed 



