June, 1921] DIGGING UP FACTS FOR NEW HAMPSHIRE FARMS 27 



Showing the work of apple worm (codHng moth) which entered at the calyx 



and left through the side. 



control measures, the general adoption of which throughout the 

 state would mean an annual saving as follows : 



Average Possible 



annual value Estimated Per cent annual saving 



of crop loss due of loss from control 



attacked to pest controlled measures 



CodHng Moth $1,078,582 $134,822 90 $121,340 



Apple Maggot 1,078,582 67,411 95 64,040 



Root Maggot 107,155 35,718 85 30,360 



Total possible saving from these three hues of work $215,740 



OTHER PESTS STUDIED 



Among the other pests of economic importance which have 

 been studied at the Station and for which effective control, either 

 in whole or in part, has been advised, are the following: grass- 

 hoppers, white ants, apple leaf miner, fall webworm, black flies, 

 San Jose scale, white fly of greenhouses, spiny elm caterpillar, 

 forest test caterpillar, canker worm, army worm, tent caterpillar, 

 yellow-necked apple caterpillar, red-humped apple caterpillar, 

 hickory tiger moth and rusty tussock moth. In a number of 

 cases original control measures have been devised. 



WHITE DIARRHEA WORK 



Practically the only work to combat animal diseases which it 

 has been possible to do at the Experiment Station has been the 



