- 623 - 
Pegonia hyoscyami, 2088 
Pemphigus populitransversus , 2341 
Penetrol, 1875, 1898, 1899, 1902, 2083, 2230, 2233 - 2241, 2245, 
2246, 2252, 2253, 2256, 2259, 2262, 2263, 2265, 
2267, 2347 
Pennisetia marginata, 1844 
Peregrinus maidis, 2354 
Periplaneta americana, 2178, 2179 
Perkinsiella saccharicida, 2286 
Peronea minuta, 1803, 1806 
Perrisia pyre, 2210, 2225 
pH of nicotine sulphate, 2166 
Phaedon cochleariae, 2455 
Phenacoccus gossypii, 2238, 2262 
Phenicated or carbolic tobacco extract, 1590, 1793, 1817, 1852 
Phlegethontius quinquemaculata, 1941 
11 cexta, 1941 
Phlyctaenia ferrugalis, 1942 
11 rubigalis, 1943, 1944 
Pholus achemon, 1945, 2067 
Phorbia armoraciae, 2455 
" brassicae, 2049, 2462 
Fhorodun humuli, 1553, 2066, 2067, 2340, 2458 
Phthorimaea opercullella, 1946 
Phyllocnistis citrella, 1746, 1756 
Phyllocoptes oleivorus, 1565, 2367 
Phyllodecta vitellinea, 2053 
" vulgatissima, 2053 
Phyllotreta albionica, 2340, 2456 - 2458 
" cruci ferae, 2078 
Physical properties of nicotine sprays, 2137, 2144, 2152, 2154, 
2156 - 2158, 2160, 2252, 2257 
Phytomyza chrysanthemi, 2067, 2104 
" ilicis, 2465 
Phyxia scabiei, 2483 
Pieris brassicae, 1848 - 1854 
" rapae, 1855 - 1857, 2296, 2441 
Pill bugs, 2044, 2104 
Pionea forfi calls, 1940 
Piperidine, 2179 
Plastosciara perniciosa, 2433 
Plathypena scabra, 1947, 1948 
Plutella maculipennis, 1857, 1360 - 1869, 2086, 2472 
" cruciferarum, 1858, 1859 
Poecilocapcus lineatus, 2104, 2424 
Polychrosis botrana, 1534 - 1538, 2129, 2132, 2134, 2135, 2138, 2139, 
2157, 2270, 2272 
" viteana, 1595 
Pontia rapae, 2067 
Porthesia virguncula, 1910 
Porthetria dispar, 1809 
Potassium chloride, 2178 
" hydroxide, 2047 
" nitrate, 2096 
