INDEX. 119 



Page. 



Corn oil, impractical as mosquito larvicide 74-75 



Cover, cheap, for well-mouths or water barrels 19 



Cresol preparations as mosquito larvicides 74 



Culex abominator, breeding in places inaccessible to fish 72 



fatigans along river front in Egypt 88 



dwarf individuals, how caused 10-17 



pungens (see also Culex pipiens). 



as affected by fumigation with Mimms Culicide 34 



larvae asphyxiated in lemna-covered water 30 



pipiens (see also Culex pungens). 



breeding places 19-22 



unaffected by pawpaw or castor-oil plants 24-25 



qainquefasciatus, breeding places L9-22 



destroyed in fumigation with Mimms Culicide 33 



in Habana 92-93 



Culicide, Mimms, fumigant against mosquitoes 33-34 



Culiseta annulata in peaty water and near peat piles 27 



Cups of water used to insulate table legs from ants, breeding places of mosquitoes . 



Cyprinodon calaritanus, enemy of mosquitoes 71 



enemies of mosquitoes 06, 67 



Cyprinoid fish in Trinidad, enemy of mosquitoes 63 



Cyprus, malarial mosquito larvae destroyed by goldfish 65 



Dalmatian insect powder. (See Pyrethrum powder.) 

 Datura stramonium. (See "Jimson" weed.) 



Derris uliginosa, decoctions and emulsions as mosquito larvicides 78 



Diaphanous, enemy of mosquitoes 66 



Diemyctylus tortosus, enemy of mosquitoes 62 



"Dimorphism of seasons" 17 



Dinitrocresol as fumigant against mosquitoes 37 



Ditching machinery (see also Excavating machinery . 



used in drainage work in New Jersey 51 



Dragonflies, enemies of mosquitoes 62 



Drainage investigations of U. S. Department of Agriculture 55-58 



measures in controlling mosquitoes 42-53 



Duckweed, rootless. (See Lemna arrhiza.) 

 Duckweeds (see also Lemna arrhiza and L. minor.) 



as deterrents against mosquito larvae 2S-30 



Egypt, work against mosquitoes along river fronts 



Electricity, suggested use against mosquito larvae 79 



Enemies, natural, of mosquitoes, their practical use 62-72 



England, reclaimed marsh lands 



Enneacanthus gloriosus, enemy of mosquitoes 67 



obesus, enemy of mosquitoes 67 



Ephemera larvae, food of fish 



Eucalyptus as deterrent against mosquitoes 22-23 



Excavating machinery (see also Ditching machinery . 



for digging dinhes and building levees, publication 



thereon 



Federated Malay States, mosquito extenninati\ e measures S 



Filariasis, use of sulphur dioxid in disinfection 



Fire buckets. (See Buckets, fire.) 



