We now have the most effective quarantine system in the tropics, and one of the best in the world.

At Mariveles there is a very large and complete disinfecting plant, and vessels may also be satisfactorily disinfected at Cebu and Iloilo.
This quarantine service kept the Philippines free from bubonic plague for seven years, and has repeatedly prevented the entry of pneumonic plague, that most deadly of all known diseases.
A peculiar and shockingly disfiguring disease known as yaws occurs somewhat infrequently in the Philippine lowlands and is very prevalent in a number of places in the highlands.

In many ways it resembles syphilis, and indeed at one time was considered to be syphilitic in its origin.

Doctor Richard P.Strong, of the Bureau of Science, made the very important discovery that salvarsan is an absolute specific for it.

The effect of an injection of this remedy closely approaches a miracle in medicine.