Index 



327 



Chlorofonn tube for mosquito 



catching, 91, 211 

 Clothing for rainy season, 81 

 Collecting Anopheles larvae and 



pup» for laboratory, 45 

 Colombia, lack of sanitary 



organization, 264 

 Concrete {see Ditches) 

 Containers, the breeding places 



of Aedes calopus, 55, 240 



dregs in, 263 



experimental wooden, 312 



flower-pots at Ancon 



Hospital, 18, 263 



hidden, 241, 280 



mosquito producing in 



Havana, 237, 240 



mosquitoes disappear on 



removal of, 290 

 movable and traveling, 



307 



resembling natural breed- 

 ing places, 55 



in rubbish heaps, 263 



screening of, 311 



Coral formation, 7, 269 

 Costs of Canal Zone prevention 



measures, 220 

 Crab holes, 72 

 Culverts (see Drainage) 



Darling, Dr. S. T., biting 

 experiments by, 46 ■' 



identification of larvae by, 



48 

 studies of Isthmian Ano- 

 pheles, 45 

 Diary, station, 307 

 Ditches, alignment of, 146 



branch, 126, 134, 141, 143 



comparative cost of lin- 

 ings, 137, 145. 148 



concrete lining, 136 



conditions producing mos- 

 quitoes, 71 



cost of spoiling grade, 147 



factors in construction 



of, 149 . , 

 fieldstone lined, 19 



Ditches, grading of, 126, 128, 

 132, 134, 147 



herring bone, 7, 126 



on hydraulic fills, 120 



inspection of, 129, 144, 



145 



mterceptmg, 9, 16 



key walls, 140 



location of, 125, 196 



maintenance of, 125, 144 



cost of maintenance of, 



15. 137. 145 



masonry lined, 17 



narrow bottomed, 125 



natural water-courses, 149 



near seepage outcrops, 136 



open, 125, 129, 130, 136, 



149 

 permanent lining of, 8, 



137 



pot-holes m, 61, 125, 128 



regrading of, 130 



reinforced concrete lining, 



15-138 

 reinforced concrete lining, 



cost of, 138 



scouring of, 128, 130 



slope of, 125, 136, 138, 



140, 144, 148 



soft bottomed, 56, 148 



storm water, 127 



in truck gardens, 1 1 



undermining of, 41, 143, 



144, 146 



width of, 123, 143, 148 



weep holes in, 136, 139, 



141 

 Dragon flies, 185 

 Drains, outlet of intercepting 



tile, 135 

 Drains, storm water, 127 

 ' ' Drainage, A nopheles, ' ' re- 

 quirements for, 125 

 Drainage, badly planned, 124 

 channels, blocking of, 



in coral formation, 7 



culverts, 41, ^o, 150 



use of dynamite in, 118 



grade, change of, 131, 149 



