74 POPULAR FRUIT GROWING. 



37. What is the remedy for it? 



38. What is the life history of the oyster shell bark louse? 



39. What is the injury caused by and the remedy for the same? 



40. What is the injury caused by the branch form of the woolly 

 aphis and remedy for it? 



41. What injury does the woolly aphis cause on the roots of ap- 

 ple trees? 



42. What is the best remedy for it? 



43. What insects are injurious to the pear tree? 



44. What injury does the slug cause? 



45. How are its ravages prevented? 



46. How does the pear psylla injure the trees? 



47. What is its life history? 



48. What remedy should be applied? 



49. What insects are injurious to the peach? 



50. What harm does the twig 1 borer cause? 



51. What is the best remedy for it? 



52. What injury is caused by the peach borer? 



53. What is the remedy for it? 



54. How does the plum curculio affect the plum? 



55. What is the remedy? 



Take up the other insects discussed in the same way as the 

 foregoing. 



