THE MONTHLY BULLETIX. 167 



sides, and are covered with long tufts of hair. After becoming full 

 grown they drop to the ground, passing the resting stage there, and 

 emerge as adult moths. These again lay eggs and give rise to another 

 generation of larvae, which again strip the trees of their leaves. There 

 are several broods a year of this insect. The larvae may be destroyed by 

 applying arsenical sprays, such as arsenate of lead, 3 pounds to 50 

 gallons of water. This is only necessary where the larvae are vei*y 

 numerous. 



MISCELLANEOUS INSECTS. 



The Rose Aphis. 



These soft-bodied greenish or pink lice, so common on the rose bushes 

 throughout the entire year, especially in April and ]May, are known to 

 practically every gardener. The young shoots and buds are partieu 

 larly sub.iect to the attack of these insects. Washing the plant lice 

 from the bush with a high pressure of water will be fairly effectual, and 

 a soap solution or "Black Leaf 40," 1 to 1000, with a small amount of 

 soap to make the material spread more easily, will destroy them. 



The Raspberry Horntail. 



The raspberry horntail is a wasp-like insect, attacking the raspberry, 

 blackberry, rose and loganberry. The life history, as worked out bj^ 

 Essig, is as follows: The eggs are inserted by the adults in the tips of 

 the young shoots. These soon hatch, the larva? burrowing outward, 

 killing the canes as they make their way toward the tip. The control 

 measures recommended are to destroy the eggs before they hatch, by 

 exerting a slight pressure on them. The shoots Avill not be injured b}' 

 this treatment. A good plan is to cut out the infested canes. 



Cutworms. 



The cutworms are very common in the garden, some species cutting 

 off the tender plants near the surface of the ground, others crawling up 

 the stems and destroying the leaves. They are for the most part dark, 

 greasy looking worms, and are the larvae of a family of Lepidopterous 

 insects known as Noctuids. Fields or gardens that have been allowed 

 to run to weeds are thickly infested with these destructive pests. They 

 can easily be found an inch or two beneath the surface of the soil, near 

 the host. To control these pests is difficult. Many will be killed by 

 using a poison bait, which is placed near the affected plants. This poison 

 bait or mash is composed of 1 pound of Paris green and 40 or 50 pounds 

 of bran, which is sweetened with a cheap grade of molasses and mixed 

 with enough water to make a stiff mass. 



DISEASES OF PLANTS. 



Cherry Gummosis. 



By cherry gummosis is usually meant the formation and exudation 

 of gum, as a result of an abnormal condition of the cherry. F. L. 

 Griffin, of the Oregon Agricultural College, has demonstrated that gum- 

 ming in the sweet cherry may result from infection by a certain species 

 of bacteria. The blight of the cherry buds may also be due to the same 



