22 The Philippine Journal of Science 



on a suitable diet and introduces himself gradually into the 

 work in the sun. 



16. In the acclimatization of the white man the most import- 

 ant factor is the proper regulation of the diet. 



17. The effects from the tropical sun seemed to be exactly 

 the same as the effects from the sun in the United States; that 

 is, no effects were seen or felt in these experiments that were 

 different from what would have been expected under like cir- 

 cumstances in the northern portion of the United States. 



