168 REPORT OP OFFICE OF EXPERIMENT STATIONS. 



Relation of Lime to Soil Improvement; 8, The Elm-leaf Beetle; 9, 

 Orange Hawkweed or Paint Brush; 10, Propagation of Starter for 

 Butter ^Making and Cheese Making; and the Annual Reports for 

 1909 and 1910. 



The income of the station during the past fiscal year, in addition 

 to State funds, was as follows: 



United States appropriation. Hatch Act $13. .500 



United States appropriation, Adams Act 13, .500 



Total 27, 000 



The work of the Cornell Experiment Station is well supported 

 and is organized on a large scale. In response to public demand 

 there has been a rapid growth of the more popular forms of work 

 in different parts of the State, but this is quite distinctly differen- 

 tiated from the more strictly research work of the station. 



NORTH CAROLINA. 



North. Carolina Agricultural Experiment Station, Weiit Raleigh. 

 Department of North Carolina College of Agriculture and Mechanic Arts. 



C. B. Williams. M. S.. Director. 



The few changes occurring on the station staff during the year in- 

 cluded the appointment of J. P. Pillsbury, of the Pennsylvania col- 

 lege and station, as horticulturist. 



Satisfactory progress was made in the various Adams fund in- 

 vestigations. Some of the results in the studies on soil nitrification 

 were published and further data were prepared for publication, 

 A modification of the diphenylamin method for determining nitrates 

 and nitrites was devised and the method thereby rendered far more 

 delicate. The Tiemann-Scliulze method for determining nitrogen 

 was also modified to shorten the lime necessarj^ for its application 

 and to remove a source of inaccuracy. The investigation conducted 

 had a bearing largely on the efficiency of soil extracts, the inoculat- 

 ing power of soil extracts, and the value of nutrient media rather 

 than soil extracts for the cultivation of soil organisms. Experi- 

 ments were also begun to compare different methods of inducing 

 nitrification in rich and poor soils. The work on soil nitrification 

 also included studies on the movement of bacteria through the soil, 

 associative activity of the soil organisms, and on nitrification in the 

 greenhouse and in the field. 



The study of lettuce diseases, especially the disease due to Sclero- 

 tinia, was practically completed during the year. Practical means 

 by soil sterilization were worked out for the control of the disease. 

 The results of this study were prepared for publication but some 

 points regarding the cultural characters of the fungus remained to 



