334 



Index 



Vegetation, changes in, 182 

 clearing of, from water, 



63, 191 



cutting on edges of 



streams, 10, 64 



grass cutting, 295 



effect of dead, 79 



on fills, 39, 118 



inhibition of, 171, 177, 



192 



retards current, 129, 130 



retards surface velocity, 



10 



on seepage outcrops, 196 



shelters mosquitoes, 43 



toxic effect of Panama 



larvadde on, 177 

 uncut, retards evapora- 

 tion, 37, 197 

 Verandas, screemng of, 199, 



202 

 Vestibule, on houses of yellow 



fever patients, 286 

 yellow fever ward, 287 



Walking cases {see Yellow 



fever) 

 Water barrels, mosquito proof- 

 ing of, 293 _ 



impounding of, 150 



near sewer outlets, 81 



subsurface, 116 



supply, effect on yellow 



fever in Panama, 262, 

 269, 288, 304 



in French camps, 17 



in Havana before 



yellow fever cam- 

 paign, 305 



notes on, 318 



in towns in Cuba, 



323 ^ . , . 



temperature of, in relation 



to Anopheles produc- 

 tion, 65, 66, 72 



velocity of, effect on 



larvae, 144, 149 

 Watson, Dr. Malcom, report 

 to Royal Colonial Institute, 

 225 



Wave'action, effect on mosqui- 

 to larvEB, 68 



ripples break oil films, 



163, 170 

 Weep holes {see Ditches) 

 Wells, Anopheles in, 55 



in coral formation, 7 



Wheel-tracks, filling of, 58, 115 

 Wind action, loss of fumes by, 



259 



moves and collects debris, 



68 



Anopheles travel at right 



angles to, 105 



Anopheles rest under 



houses during, 86 



breaks, 170 



drying effect on mosqui- 

 toes, 46, 113 



effect on larvae in lakes, 



etc., 68 



evaporation of flat areas, 



12 



velocity of, 86, 90 



Wood, General Leonard, sup- 

 ported mosquito control 

 measures in Cuba, 242 



Yellow Fever Board, Panama, 

 286 



a plan of campaign 



against, 320 



cases, 243, 275 



investigation of cases and 



suspected cases, 283 



case histories, 300 



^^'chain of transmission, 292 



Commission, Cuba, 246 



cost of eradication, 318 



effect on emigration, 316 



effect on morale of em- 

 ployees, 314, 316 



eradication, 291, 314, 317 



eradication without sewer 



and water supply, ■^23 



foci, 265 



fomites, 233, 236 



history of, 232 



imported cases, 292 



infection, 245 



mortality curves of, 315 



