4 EXPERIMENT STATION RECORD. 



feeding experiments showed that they likewise resist the action of the 

 digestive juices of the animal, and that not more protein was taken out 

 in natural digestion than was dissolved by treatment for 84 hours in the 

 manner described. 



The results of Prof. Kiihn's investigations suggest an interesting line 

 of study. The omission of digestion with pancreas is a simplification 

 of the method which will be welcomed by all who have occasion to make 

 determinations of digestibility by artificial means. But the accuracy 

 of the method proposed by Kiihn needs to be demonstrated by experi- 

 ments on a variety of materials in connection witli trials on different 

 kinds of animals. Doubtless other groups of feeding stuffs than the ' 

 residues mentioned will be found to require special treatment in order 

 to secure correct coefficients. The experience with the original method 

 has shown the danger of too hasty conclusions. The wide interest 

 manifested in the develoi^ment of artificial digestion is evidence of the 

 desirability of a reliable method for this purjiose, even though it applies 

 only to the i)rotein. Such studies of methods of investigation form a 

 legitimate and profitable line of work for the experiment stations. 



