﻿32 



The Philippine Journal of Science 



1914 



Table XVII. — Rats destroyed on vessels by sulphur fumigation. 



(Fiscal year 1909.) 



Month. 



Number of rats on — 



Number of vessels — 



Steam- 

 ers. 



Schoon- 

 ers. 



River 

 craft. 



All. 

 vessels. 



Having 

 rats. 



Having 

 no rats. 



Fumi- 

 gated. 



July _ 



152 

 73 

 24 

 29 

 30 

 42 

 7 

 22 

 51 

 38 

 45 



116 



74 

 

 

 4 

 

 

 4 

 

 

 2 

 6 

 





 7 

 

 

 

 

 

 

 

 

 

 



226 

 80 

 24 

 33 

 30 

 

 11 

 22 

 51 

 40 

 51 



116 







38 

 14- 

 9 

 8 

 5 

 8 

 5 

 7 

 8 

 9 

 9 

 6 









September . 







October 







November - 







December 







January _ 







February 







March 







April 







May 







June 







Total 







629 



90 



7 



726 







126 









Table XVIII. — Kinds of vessels on which rats were destroyed. 



(Fiscal year 1909.) 



Vessels. 



Rats. 



Percent- 

 age of 

 vessels 

 having 

 rats. 



Kind. 



Total. 



Having 

 rats. 



Having 

 no rats. 



Total. 



Average 



in all 

 vessels. 



Average 



in vessels 



having 



rats. 



Steamers 



108 



17 



1 



76 



12 



1 



32 

 5 

 



629 

 90 



7 



5.82 

 5.29 

 7.00 



8.30 

 7.50 

 7.00 



70.63 



70.60 



100.00 



Schooners 



River craft 



All vessels 



126 



89 



37 



726 



5.76 



8.15 



70.63 





Table XIX. — Rats destroyed on vessels by sulphur fumigation. 



(Fiscal year 1910.) 



Month. 



Number of rats on — 



Number of vessels- 



Steam- 

 ers. 



Schoon- 

 ers. 



River 

 craft. 



All ves- 

 sels. 



Having 



rats. 



Having 

 no rats. 



Fumi- 

 gated. 



July 



4 



10 



18 



298 



12 



60 



22 



102 



424 



234 



360 



100 





 

 7 

 

 

 



16 

 

 9 



67 

 

 





 

 

 

 

 

 

 9 

 31 

 5 

 

 5 



4 



10 



25 



298 



12 



60 



38 



111 



464 



306 



360 



105 







3 

 3 

 5 

 ' 10 

 3 



August -- - 







September _ 







October 







November 







December 







7 



January 







8 

 14 



58 

 44 

 15 



3 



February 







March - 







April-. 







May. 







June. 







Total 









1,634 



99 



60 1.783 







183 











