328 INSECTS AFFECTING VEGETATION 



(3) By the treatment of timbers necessarily exposed to moist 

 conditions with creosote, zinc chloride, corrosive sublimate, etc. 



(4) If the timbers become infested, further progress of insect 

 damage can be prevented by removing the badly damaged parts and 

 soaking the remainder with kerosene, fumigating with bisulphid of 

 carbon, and by removing any adjacent decaying or other wood in 

 which the insects have been breeding or may breed, such as logs, 

 stumps, etc. 



Log Cabins and Rustic Work. Damage by bark and wood bor- 

 ing insects to the unbarked logs and poles used in rustic cabins, 

 summer houses, fences, etc., can be largely prevented by cutting the 

 material in October and November and utilizing it at once, or by 

 piling it off the ground or under cover in such a manner as to offer 

 the best facilities for the rapid and thorough drying of the inner 

 bark before the middle of March or the 1st of April following. If 

 these necessary precautions are not taken, and there is evidence that 

 insects are at work in the bark and wood, the damage can be checked 

 by injecting bisulphid of carbon through natural or artificial open- 

 ings in the affected bark, and immediately stopping these and other 

 openings with putty or a similar substance. 



Poles, Posts, Piles, Ties, Mine Props, and Similar Products. 

 Insect damage to poles, posts, and similar products can be prevented 

 to a greater or less extent by the preservative treatments which have 

 been tested and recommended by the Forest Service for the pre- 

 vention of decay. These should be applied before the material is 

 utilized for the purposes intended, or, if it be attacked after it has 

 been utilized, further damage can be checked to a certain extent by 

 the use of the same substances. 



It is often of prime importance to prevent injury from wood- 

 boring insects, for the reason that such injuries contribute to more 

 rapid decay. Therefore anything that will prevent insect injury, 

 either before or after utilization of such products, will contribute to 

 the prevention of premature deterioration and decay. 



The Browntail Moth. 



The Gypsy Moth. 



The Forest Tent Caterpillar 



Insects Affecting Shade 

 Trees and Ornamentals. 



And all other leaf injuring insects. 



(Bui. 58, Part V, B. E. U. S. D. A.) 

 INSECTS OF FARM HOMES. 



SOME HOUSEHOLD PESTS. 



Not only the agriculturist and horticulturist has his plague of 

 bugs the housekeeper has troubles of a similar nature to contend 

 with, and some of those are just as obstinate and difficult to man- 

 age as those in the field and orchard. Nothing escapes insect at- 

 tack, from the carpet to the baby, and there is no kind of food prod- 

 uct that is not liable to become infested. 



Roaches. Three species of roaches occur in houses two of them 

 commonly, one of them rarely, and usually confined to stores and 



