38 BULLETIN 891, U. S. DEPARTMENT OF AGRICULTURE. 



bait sweetened with sugar, but the beetles did not relish it. Others 

 sprinkled poison on ripe fruit as a means of attracting the beetles, 

 also without success. Prof. Henry Garman (36), Kentucky State 

 zoologist, stated that hand picking for the adults seemed to be the 

 only safe remedy. 



If it were possible to destroy the beetles in larger numbers than 

 has been done heretofore this would mean a great lessening in the 

 abundance of the grubs, which, as we have plainly shown, are even 

 more injurious than the beetles. 



FOR THE GRUBS. 



Numerous remedies which have been practiced successfully against 

 the common white grubs (Phyllophaga) have been reported effective 

 against the Cotinis grub, and again as useless. Years ago, according 

 to Dr. L. O. Howard, an experiment was made which consisted of 

 a modification of the bran-arsenic mash and met with success against 

 this grub in a celery field. 



Poisoned Baits. 



There is little doubt that still better results might be obtained by 

 using a grasshopper remedy, called the Griddle mixture, which may 

 be modified to suit the grub under consideration. It has been used 

 with great success in Manitoba. As originally used it consisted 

 of 1 part of Paris green mixed thoroughly in 60 parts of fresh horse 

 droppings, 2 pounds of salt to half a barrel of mixture being added 

 after being dissolved in water. This is placed in a half barrel and 

 drawn on a cart to the edge of the infested field, or one likely to 

 be infested. The mixture is then scattered broadcast along the edge 

 of the crop, or Avherever needed, by means of a trowel or wooden 

 paddle. The grasshoppers are attracted to it and are killed in large 

 numbers by eating the poison. 



A cheaper arsenical is white arsenic (arsenious oxid), used in the 

 same proportion. 



An application of poisoned bran mash was made at Norfolk, Va., 

 November 18, 1914, in the field and under glass, but examination two 

 days later failed to indicate results. It is believed, however, that if 

 this remedy had been applied in September or October the grubs 

 might have been killed. 



Collecting and Hand Picking. 



It has been shown repeatedly in different localities that after 

 heavy rainfall these grubs are brought to the surface in large num- 

 bers, and it is not difficult to collect them early in the morning when 



