The Bridgeport evening farmer., 1915-02-26

SGOEG0 GEEG1n.
 Washington, Feb. -dtch- lorobenzene'' Is the formidable name of a chemical compound which has only recently been used as an fnsec- tictde but which, in being non-innam- mable and comparatively inexpensive, possesses advantages over other funai- gants. The U. s. Department of Agricu1ture's new bulletin (No. 1679 is entitled, Para-d1ch1orobenzene as an Insect F,unigant' and points out that the compound although deadly to insects is harmless to human be- ings under ordinary conditions and does not have an odor which clings to fabrics as do many insecticides.
 Directions for. Using.
 ara-dfchlorobezene is applied in most instances In the same manner as oaimphor and naphtha1ene. It is not, however necessary to sprinkle it around In corners or over rugs and other material. as is often the case with camphor and naphtha1enes but merely to expose a sufficient quantf- ty in one or two open or partially open receptacIess placed over. or higher, than the infested cases, goods, and material which require fumiEa- ton.
 How Put Up and Cost.
 Para-dich1orobenzene at the pres-
 
 100 pound and barrel lots, the prices for which are as folIowss 2s cents per pound in 5, 10 and 25
 pound lots
 IS cents per pound in 50 pound lota IT cents per pound. in 100 pound
 lots.
 15 cents per pound. in barrel lots.
 If any consi deralb1e quantity ip to be used. 1t is much better to pur- chase of some wholesale druggist or direct from the rnanufacturers. ApplicaI,ility to Various Insects. Para-di ichIorobenzen is applicabIe to many insect pests living under vaT1- ous condtttonse and environments and therefore, requires specific meth ods of application, and, arillxe carbon bisulphid. 1t is4 at the present time used only indoors and in other places where its vaporg can be closely con- l fined. As there is a great variation in the tenacity Of life among insects the existing conditions should be care fully noted before para-dfchloroben. zene Is applied
 Beetles, such as rice weevfI, gran I ary weev11. the confused flour beetle tho cade11e, the yellow 111ealworn and q few others less common are particularly hard to kill when in the adult stage. The larvae of certain other n1eaIworms are likewise found by experiment to possess great tena- l city of life It Is therefore recon- mended that proportfo fonateIy larger amount of para-dich ch1orobenzene be used when combating these species Moths, flies. reaches. ants. and ap14- ides are readily killed by para-dieh- advertisements when used in the or 1 dlnary strength as prevaousay recom- mended.
 The action Of para -dichIozobenzen on insects is primarily upon their ner- vous systems. This propert is readily manifested when a. moth is exposed to the yapors for a few seconds. II 1 frat displays spasmodic convu1sfone and finally turns over on its back l While in tElis position violent nervous and muscular reflex action is noticed until life is extinct
 Para ~dtch1orob robenzene is coIorless I crystafIine substance which evapor- ates very quickly as 2. vaopr. if expos ed
 It is not adv1sabae for sensitive per sons to remain for a long time in a closed room where para-dichloroben- gene Is freely exposed. as the odoE may cause annoyance. On the other l hand, para-dic dichlorobenzene can be used in closed or occasionally opened cupboards and even in sitting rooms without causing any inconvenience whatsoever.