2? The Philippine Journal of Science 1915 
drink factories, clubs, tiendas, and ice-cream factories, by which 
classes infection was particularly liable to be transmitted. Some 
surprising results were obtained with the last class, and numer- 
ous carriers were found and removed from duties in which they 
might have caused—and doubtless did cause—much damage. 
To meet the needs of the work, the Governor-General author- 
ized additional expenditures which doubled the capacity of the 
Bureau of Science with regard to cholera diagnosis by bacte- 
riological methods. However, after funds were authorized, it 
took several weeks to secure and install the necessary additional 
equipment and to obtain and train the additional personnel. 
Finally, bacteriological examinations were being made at the 
rate of nearly 2,000 per day, due to improved organization and 
technical efficiency of the new employees of the Bureau of 
Science. 
With the increased isolation of carriers thus made possible, 
the cases began to fall. The epidemic appeared to be under- 
mined rapidly at its source. At one time there were 195 car- 
riers in detention. The practical importance of having removed ° 
such a number of concealed foci from the community at one 
time and put them where they could be of no danger in spread- 
ing the infection thus harbored does not need to be emphasized. 
During the outbreak, 529 cholera carriers were found through 
the health stations and 128 more occurred among the convicts 
of Bilibid Prison. A total of 657 such carriers was thus found 
and isolated within the corporate limits of Manila up to the 
middle of November. 
The following is the report of stool specimens taken from 
persons not cholera suspects and forwarded to the Bureau of 
Science for examination during the months of July, August, 
September, and October, 1914, as taken by the several health 
stations in the city of Manila: 
TABLE I.—Stool specimens examined for cholera at the Bureau of Science, 
July—October, 1914. 
July. | August. September. 
Source of specimen. | Posi axe l Parlin al 
} ‘osi- | Nega- | ‘ Posi- | Nega- | Posi- | Nega- 
| Total. tive. tive. | Total. tive. tive. Total. | tive. / tive. 











ATs | bral: Rs | é 
Health station— | ) | | j | 
I x 288 27 | 2a | 1,927 43 | 1,282| 3,539! 69 | 8,470 
UAE ERS ae s1| 799| 4,851] 118] 4,788| 5,467) 73) 6,898 | 
PAs Soe ae | soa] 18] a9n| sav} a7] 620} 1,796] 26] 1.770 | 
Pic ee ee 95 5 90| 736 | 18} 718| 1,414 | 21} 1,398 
Dee tes i OM WR ea PD Una a 
| 7, 641 | 208 | 7,488 ) 18,056 | 205 | 12, 851 
Mota leper aeee aera | 1,644 77 | 1,467 
