. . . . "The nozzle assembly discharges the air Pmmmmnmz 3.633.825 SHEEI 1 UF 4 llillll PATENTEB mu 1 1912 31633; 825 SHEET 2 OF 4- PATENTED m1 1 1972 3; 633. 825 SHEET RUF 4 FOGGING APPARATUS BACKGROUND OF THE INVENTION In the past, insecticides, pesticides, defoliants, fungicides and other chemicals have been spread over a large outdoor area by being dispersed in a liquid carrier, such as diesel oil, and" . .