TROPICAL CLIMATE 15 



healthfulness and nutritive value of tropical foods. On this 

 point it is not necessary to dwell at any length. In all tropi- 

 cal countries, all tropical foods are safe, except vegetables to 

 be eaten raw, and surface water. Lettuce, celery, radishes, 

 strawberries, etc., irrigated by Chinese methods, are not safe 

 foods, particularly in case of an outbreak of Asiatic cholera, 

 and, moreover, are not appetizing under any circumstances, 

 if one knows by first hand observation something of the meth- 

 ods of Oriental irrigation. Surface water can nowhere be 

 recommended for use without boiling. This is equally true 

 for northern climates. In the Tropics, however, there are 

 added dangers from the prevalence of minute worms as well 

 as the possibility of typhoid and cholera infection. 



The main point in keeping well in the Tropics is to remem- 

 ber that a reasonable amount of physical exercise is absolutely 

 necessary, notwithstanding the fact that the general comfort- 

 able feeling may easily persuade one to think that exercise 

 may be omitted from the daily routine. It is perhaps well for 

 everyone to continue the same form of exercise to which he 

 was accustomed in the colder climates. Some exercise hobby, 

 however, seems to be strictly required, and the Tropics offer 

 the same list of recreations as colder climates, namely, tennis, 

 golf, baseball, football, horseback riding, rowing, mountain 

 climbing, and hunting. 



