In 1903 he was appointed Bacteriologist to the Government of Ceylon at the Central laboratory in Colombo and continued research in mycology and bacteriology, describing several new species of intestinal bacilli. He invented the absorption test for the serological identification of closely allied organisms.
In 1903, he was appointed as a Bacteriologist by the Government of Ceylon at the Central laboratory in Colombo and continued his research on mycology and bacteriology, describing several new species of intestinal bacilli. He developed an absorption test for identifying closely related organisms through serology.