Farm Field And Garden

The Illinois State Entoniologist gives this formula for kerosene emulsión: Soap, one half pound; water, one gallon; kerosene, two gallons. Boil the soap and water until the soap is dis60lved, remove from the fire, add the oil and churn until a thick cream or butter is formed. Dilute with nine to twelve parts of water to one of emulsión. This may be used in destroying plant lice, lice on live stock, and for insects generally that take their food by suo tion. It kills by contact. Apply by spraying. Regarding paris green and London nnrple the authority quoted says in the Prairie Farmer that paris green is one of the most generally used of the insecticides. When pure it has the advantage of being a definite compound from which definite results may be expected from time to time. Because of its tveigbt paris green does not reniain long suspended in water, and henee requires constant stirring when in use. London purple is much finer and lighter and reinains suspended in water much better. It is objectionable because of the valuable quantity of arsenic in it - it being a waste prodnet. Some of the arsenic in it is algo soluble in water, making it more apt to burn the foliage than is paris green. Professor Gillett first overéame the latter objection by adding lime to the mixture. Professor J. B. Smith, who has experimented recently, says that by adding, in weight, quick lime to equal the amonnt of London purple, and mixing lime and purple to a paste before diluting for use, all the free arsenic is taken up and an insoluble compound is formeel which is as little injurious as paris green. Practically the same proportion of each of these arsenites may be used in a mixture for spraying - one pound in 200 or 300 gallons of water. Spraying should not be done on a very hot day, especially not in the middle of the day, as injury to the foliage is apt to follow. These remedies may be applied to almost all insects that take their food by gnawing. Against such pests as the May beetles and rose chafers it is useless to apply them, as the pests come in such uumber as to overwhelm the plants without their hosts being apparently diminished. Fish oil soap is made of concentrated lye, one pound; fish oil, three pints; soft water, three gallons. Dissolve the lye in the water and when brought to a boil add the oil. Boil for two hours or more and when cold it will become solid. Dissolve one pound in eight or ten gallons of water. Spray or use as a wash upon trees or plants affected by plant lioe or scale insects. White hellebore, the well known remedy for currant, gooseberry and rose slugs, is conveniently applied as a spray; dissolve one tablespoonful in one gallon of water.