758 EXPERIMENT STATION RECORD. 



promptly to phosphates, and hence is probably deficient in available phosphoric 

 acid. The plan is to demonistiate this diiference by the action of solvents, and by 

 selectiiis the solvent and method of treatment that is found to yield results in 

 closest relation to the field results we will have the basis of a method for deterrain- 

 iu<i chcmieally the soil's needs." 



Peusonai. Mention. — Prof. R. Waringtoii, the newly elected professor of rural 

 economy of Oxford University, delivered his inaugural lecture February 4, the sub- 

 ject being the "Present relations of agricultural art and natural science." 



Dr. A. Koch has been chosen i)rofessor of physiological botany in Gottingeu. 



