20 
for the purpose of obtaining clean water. There are a very con¬ 
siderable number of these receptacles, and many Anopheline larvae 
have been obtained from them throughout the year. 
The igarape at the back of Rua independence (Plan i). the head 
of which is now filled in by the Rua da Codeia, is still a breeding 
ground for mosquitos by reason of the dank vegetation along the 
sides. The back yards of many of the houses of Rua Independence 
are flooded when the river is high. Up to 1908 there existed a large 
and deep body of water just east of Rua Codeia, which occurred from 
the incomplete filling up of this arm of the igarape. Countless 
hoards of Stegomyia, Culex and Anopheline larvae bred there. Year 
after year cases of malaria and yellow fever occurred amongst the 
inmates of the neighbouring houses and hotels. By the complete 
filling in of this comparatively small area the authorities have 
destroyed one of the most dangerous breeding spots in Manaos. 
A most prolific breeding spot is the low land near Rua dos 
Andrades along the projected Avenida 13 de Maio (Plan 25), where 
collections of water harbour many Mattson ia Util Ians and Culex 
fatigans larvae. Stegomyia calopus abound in the houses of the 
neighbourhood. Some of the old houses are built on piles 
immediately over this foul-smelling water. During the rainy season, 
t he back yards of many of the houses in the vicinity are flooded and 
the neighbourhood pestered by swarms of these mosquitos. Partial 
fidmg has been accomplished, and it is to be hoped that this will 
cease to be a danger spot. 
r Tj TT a ‘° ng the Proposed Avenida 13 de Maio. from Rua 
andido Mannho up to and on the northern s.de of Rua ,0 de Julho 
Culirine } ^ pr ° pa&ation for b°th Anophelines' and 
Culicines. The swamps on both sides of Rua ,0 de Julho have 
2 "'rr eSOf theyear ' larvae of S “e om yi<“«iofus, Cell,a 
=2 2= "**= 
