56 MAINE AGRICULTURAL EXPERIMENT STATION. I916. 



Timothy 20 stems stunted plants with blasted heads No. 

 5532 ; weight freshly cut, 30.5 gms., dried 20 gms. 



Moisture. 



Ash. 



Nitrogen. 



Protein | Fiber, 

 found. 



Nitrogen, 



free 

 extract. 



Fat. 

 found. 



4.54 

 Water free 



3.54 

 3.71 



0.78 

 0.82 



4.88 26.31 58.83 

 5.11. 27.56 61.63 ' 



1.00 

 1.99 



Timothy 20 stems healthy plants with heads in blossom No. 

 5533 > weight freshly cut 100 gms., dried 62 gms. 



Moisture. 



Ash. 



Nitrogen. 



Protein Fiber, 

 found. 



Nitrogen, 



free 

 extract. 



Fat. 



7.07 

 Water free 



4.28 

 4.61 



0.83 

 0.89 



51.8 

 5.57 



33.95 

 36.53 



47.29 

 50.81 



2.23 



2.40 



The significant points in this analysis appear to be the 

 greater proportion of protein and fat the most impor- 

 tant flesh and fat forming constituents of the hay in 

 the uninjured plants as compared with the injured one?. 

 This bears out what might naturally be expected and what I 

 have long felt must be recognized in the attacks of these pests, 

 that they not only reduce the quantity but lessen the food value 

 of the crop attacked. It would of course be unwarranted to 

 claim that all this difference is due to the insect attack al- 

 though without very much more precise methods of differentiat- 

 ing the factors concerned in the maturing of the grass crop 

 it will be impossible to measure all the agencies concerned. 

 Nor is it claimed that 'all this loss is due to leaf hoppers as 

 there are other insects present and in this particular field there 

 were considerable numbers of the capsid, Leptoterna dolobrata 

 which must have had some influence in the growth of the grass 

 but the dominant forms here were the leaf hoppers and frog- 

 hoppers and I feel confident that these insects must be charged 

 with a large share in the losses that are manifest. 



It is very evident that a crop of one or one and a half tons 

 of inferior hay to the acre (an average of one ton to the acre 



