Locust rarely seriously injured by Sau 



Jose Scale, 97. 

 longicornis, Diabrotica, 80. 



M 



Mahonia apparently exempt from at- 

 tack by San Jose Scale, 97. 



Maple rarely seriously injured by San 

 Jose Scale, 97. 



Matrimony-vine apparently exempt 

 from San Jose Scale attack, 97. 



Micropteryx sp. as parasite of San 

 Jose Scale, 100. 



Mock-orange apparently exempt from 

 attack by San Jose Scale, 97. 



Mountain-ash subject to serious injury 

 by San Jose Scale, 97. 



Mulberry rarely seriously injured by 

 San Jose Scale, 97. 



N 



nigrita, Signiphora, 100. 

 Northern Corn Eoot-worni, effect of 

 rotation of crops on injury 

 by, 83-86. 

 life history and halnts of the, 



80-86. 

 breeding-experiments with, 80. 

 roots of various plants exam- 

 ined as to presence of, 85. 

 See also under Diabrotica 

 longicornis. 



Oak apparently exempt from San Jose 



Scale attack, 97. 

 Osage-orange hedges and the San Jose 



Scale, 89, 97, 98, 101, 105. 



Parasitic and predaceous insects as 

 check upon San Jose Scale, 99. 



Hymenoptera, 99, 100. 

 Papaw apparently exempt from attack 



by San Jose Scale, 97. 

 Peach subject to serious injury by 



San Jose Scale, 97. 

 Peaches infested by San Jose Scale, 



90. 

 Pear, Kieffer, rarely seriously injured 



by San Jose Scale, 97. 

 Pear subject to serious injury l)y San 



Jose Scale, 97. 

 Perissopterus pulchellus as parasite of 



San Jose Scale, 100. 

 perniciosi, Prospaltella, 100. 

 perniciosus, Aspidiotus, 87. 



Persimmon rarely seriously injuied by 



San Jose Scale, 97. 

 Pigeon-grass as food plant of Corn 



Root-aphis, 1. 

 Plowing, deep, and repeated deep 

 diskings to destroy Corn Koot- 

 aphis, 49, 53, 57, 61. 

 early spring, for destruction of 

 Corn Root-aphis and Corn field 

 Ant, 3. 

 fall and spring, compared as means 

 of reducing Corn Root-aphis and 

 attendant ant, 57-58, 62. 

 Plum subject to serious injury by San 



Jose Scale, 97. 

 Poplar, young, subject to injury as 



above, 97. 

 Privet, California, rarely seriously in- 

 jured by San Jose Scale, 97. 

 Prospaltella aurantii as parasite of 

 San Jose Scale, 100. 

 perniciosi, 100. 

 pulchellus, Perissopterus, 100. 



Q 



Quince, Japan, subject to serious in- 

 jury by San Jose Scale, 97. 



Raspberry rarely seriously injured by 



San Jose Scale, 97. 

 Redbud apparently exempt from at- 

 tack by San Jose Scale, 97. 

 Remedies and preventives for insect 

 depredations : 

 anise oil, 3. 



asafetida, tincture of, 3. 

 and bone meal, 45. 

 carbolic acid, 5, 17, 19, 41, 43. 

 citronella oil and alcohol, 17, 18-19. 

 clean farming, 3, 4. 

 cultivation methods, 49-53. 

 disking and subsequent rolling, 55. 

 formalin, 5, 41, 43. 

 kerosene, 3, 4, 5, 7, 17, 18, 41, 43. 



emulsion, 41. 

 lemon oil, 3, 5, 7, 8-17, 18, 19, 21, 

 41. 

 and alcohol, 17, 18-19. 

 and wood alcohol, 20. 

 plowing, deep, and repeated deep 

 diskings, 49, 53, 57, 61. 

 early spring, 3. 

 repellents. See under Repellents, 

 rotation of crops, 4, 48. 



and cultivation methods, 48- 



49. 

 with fall plowing, 58-60. 

 sassafras oil, 3. 



