Show He roseno emulsion next nest to the and often fully equal to them as insect destroyers is kerosene emulsion it kills by contact sucking insects aswell as well ai thosa which bite anil and eat the leaves twigs etc in bulletin no 73 professor A J cook of the he michigan station gives tho following formula for its preparation which is one ile ho has recommended and used for years DI dissolve in two iwo quarts of water one quart of soft boft soap or one fourth pound of hard soap by heating to the boiling point then add one pint of kerosene oil and stir it viol violently cutly this is best done by pumping the liquid into itself through a small nozzle so that wt it shall bo be thoroughly agitated this lie claims mixes the oil permanently so go that it will never separate aud and it ca can n to 16 diluted easily at pleasure by simply shaking shadid or slightly alii ghaly stirring stir after adding the water to dilute it when really ready to use stir in enough water to make fifteen pints in all that is one fifteenth of the liquid applied would be ba kerosene oil tile the hubbard riley formula ii as follows ono one half pound of soap dissolved in one gallon of boiling water whim when two gallons alloris of kerosene are added and immediately inedia tely stirred as before then dilute with nine parts of water to one of the emulsion it will thus bo been that professor cook uses four times is as much water as kerosene while dr riley recommends I 1 wice twice as much kerosene as water the former also uses more soap professor cook hopes that all station and horticulturists will thoroughly try both these for formulas muke that farmers and fruit growers may bo be isely advised as to their respective merits |