474 The Philippine Journal of Science 1923 



made on any precise basis. The quantities noted simply are 

 an expression of the judgment of the man who inspected the 

 stools; but they are comparatively accurate. 



In conclusion, we feel justified in stating that our observa- 

 tions yield us no information that we consider justifies us in 

 stating that amoebic infection of the bowel wall, or previous 

 dysentery, diarrhoea, cholera, or typhoid fever renders the gut 

 more responsive to whatever irritating properties carbon tetra- 

 chloride has than is the uninvolved or undamaged intestine. 



The question as to what caused the production of the blood 

 clots in the two cases cited still remains unanswered. 



In concluding this section of the paper it should be stated 

 that for many years it has been the rule at Bilibid Prison to 

 administer hookworm treatment to all prisoners when they are 

 admitted and during their period of quarantine before they are 

 finally brigaded. Up to the time this work was started the 

 treatment employed was the administration of thymol. The 

 procedure was looked upon with marked disfavor by the pris- 

 oners. So unpopular was it that one of the attendants at the 

 quarantine shed assured us that it was his belief that thymol 

 had kept more men of criminal tendency out of Bilibid than 

 conscience or fear of the law. 



After the first squad was treated with carbon tetrachloride 

 we easily could have enlisted the entire population of the quar- 

 antine shed for experimental purposes, and we met many re- 

 quests for treatment from attendants and "trusties" before 

 we finished the work. On one or two occasions it happened 

 that another squad was treated with thymol at about the time 

 one of our groups was undergoing treatment with carbon tetra- 

 chloride. The men in our group were quite at ease the follow- 

 ing morning, while the other men in the adjoining house were 

 still sustaining the pangs of thymol. Our men gently rallied 

 their less-fortunate fellows much to the amusement of them- 

 selves and the onlookers. 



OBSERVATIONS ON SUBJECTS SHOWING PHYSICAL DEFECTS 



The men in this group may be said to have been fairly repre- 

 sentative of the population of the Islands as regards their 

 physical condition. That is to say, they did not present any 

 radical departure as to health and general physical condition 

 from what may be found in any group of Filipinos selected 

 at random. However, the thirty men comprising the group 

 showed some definite pathology when examined before treat- 



