WORK AGAINST MOSQUITOE 
IN PANAMA. 
21 
following table of deaths from yellow fever in New Orleans from 
1847 to L905 points out most strikingly the value of this antimosquito 
work : 
Tabu ii. Comparative t<ii>i< of deaths from yellow fever in Veto Orleans dur- 
ing various years. 
Month. 
year. 
1878. 
1M7. 
1-:-. 
L853, 
L854. 
L8 .. 
1-.-. 
L867. 
Mnv 
:;i 
1,521 
6, 188 
982 
117 
28 
1 
1 
88 
200 
467 
126 
20 
"""22 
2 
29 
682 
1,284 
190 
LSI 
1,286 
B74 
97 
L9 
7 
182 
1. 1 in 
2,204 
1,187 
22 1 
15 
1 l 
L03 
26 
Julv .... 
71 
966 
1,100 
L96 
12 
in 
1 15 
L,0 1 
1,7-u 
1. 
117 
107 
October 
'i 
Months imknou n 
Total 
2, 80 1 
872 
7, 848 
2, 4'_>5 
4,854 
3, 107 
4,046 
160 
The epidemics of L848, L854, and L855 are least comparable with 
that of L905 because they immediately succeeded severe epidemics to 
which were due very many immunes. 
The population of New Orleans by the United State- Census was 
130,565 in L850; L68,675 in 18G0; 191,418 in 1870; 216,090 in 1880, 
and 287,104 in li>00. 
WORK ON THE ISTHMUS OF PANAMA. 
The United States Government has very properly used the services 
of Colonel Gorgas, who was in charge of the eminently successful 
work at Havana, by appointing him chief sanitary officer of the 
Canal Zone during the digging of the canal. In L904 active work was 
begun, and Colonel Gorgas was fortunate in having the services of 
Mr. Le Prince, who had been chief of his mosquito brigades in Havana, 
and therefore was perfectly familiar with antimosquito method-. In 
Panama, as in Havana, the population had depended principally 
upon rain water for domestic purposes, so that every house had cis- 
terns, water barrels, and such receptacles for catching and storing 
rain water. The city was divided up into small districts with an in- 
spector in charge of each district. This inspector was required to 
cover hi- territory at least twice a week' and to make a report upon 
each building with regard to its condition as to breeding places of 
mosquitoes. All the cisterns, water barrels, and other water recepta- 
cles in Panama were covered a- in Havana, and in the water barrels 
spigots were inserted so that the covers would not have to be taken 
off. Upon first inspection, in March, I.000 breeding place- were 
reported. At the end of October less than Ion containing larvae 
were recorded. This gives one a fair idea of the consequent rapid 
