TABLE OF CONTENTS TO REPORT V. 31 



NOXIOUS INSECTS. 



Page. 



Notes of the Year 46 



THK CODLING MOTH 4(j 



Experiments with Wier's Apple- worm trap, 46 Value of different mate- 

 rials for bandages, 47 Jarring, 46 Occurrence of the Apple-worm in 

 California, 49 Enemies and parasites, 44 The Ring-legged Pinipla, 

 49 The Delicate Long-sting, 50 Other enemies, 51 Efficiency of 

 the Spined Soldier-bug, 51 False doctrines for exterminating the Cod- 

 ling Moth, 51. 



THE COLORADO POTATO-BEETLE 52 



Its comparative harmlessuess in 1672, 52 New food-plants, 52 Its pro- 

 gress eastward up to 1872, 52 Experiments with Paris green, 53 New 

 enemies, 53 The Rust-red Social Wasp, 54 The Rose-breasted Gros- 

 beck, 54. 



THE APPLE-TWIG BORER 54 



It attacks also pear twigs, 54 It has been bred from grape-canes by Dr. 

 Shinier, 54. 



EGG OF THE HORNED PASSALUS 55 



The egg, 55 The newly hatched larva, 55 Rapid development of the 

 insect, 55. 



EGG OF THE COMMON MAY BEETLE 55 



Description of the eggs and how they are deposited, 55. 



EGG OF THE BROAD-NECKED PRIONUS 56 



Characteristics of the eggs and where they are deposited, 56. 



EGGS OF AMERICAN TENT-CATERPILLAR 56 



Correction of the figure given in Report III of the egg-bolt, 50. 



COUNTERWORKING THE TOBACCO WORM 56 



Mr. White's method of planting the Jamestown Weed among the potatoes 

 and poisoning the blossoms thereof, 56. 



The Grape Phylloxera 57 



Its popular name, 57 Accounts of the unusual mortality among grape- 

 vines in the spring of 1872, 57 Causes of this mortality given iu the 

 accounts, 59 Excessive drouth and overbearing, 60 The Phylloxera 

 is the true cause, 60 Actual proof of the Phylloxera having caused 

 the mortality among grape-vines, 61 Influences that favored the in- 

 crease of the lice in 1872, 61 Importance of a full understanding and 

 management of the Phylloxera, 62 Its range in North America, 62 

 Its spread in Europe, 63 Inconstancy in the habits of the gall-lice, 

 63 The leaves of Clinton vine no longer affected by the gall-lice since 

 1871, 63 Method of formation of the leaf-gall, 64 Relative immunity 

 of American vines in Europe, 64 Propagating American varieties from 

 cuttings, 65 Appreciation of American vines in Europe, 66 Careless 

 statement published as to the immunity of Labrusca-'vine, 66 Grafting 

 the grape-vine, 67 New theories, 67 The Phylloxera is the true cause 

 and not the effect of the disease, 67 Mr. Lalirnaii's theory that the in- 

 sect has always existed in Europe, 68 Oidium Tuckeri of Europe and 

 America identical, 69 Mr. Saunders's account of the presence of Oidium 

 Tuckeri in America, 70 Means of contagion of the disease from one vine 

 to another, 69 Flying capacity of the winged Phylloxera, 70 The 

 male louse, 71 Remedies, 71 Efficacy of carbolic acid and soot, 

 71 Value of submersion or irrigation, 72 Sprinkling with quick-lime, 

 ashes, etc., 72 Mr. Lichtensteiu's experiments to allure the lice, 72 

 Experiments with carbolic acid, 73. 



