Froggatt was a founder in 1891 and later president for a record eleven years of the Naturalists' Society of New South Wales. In 1896 he was appointed government entomologist to the agricultural department of New South Wales.
Froggatt played a key role as a founder in 1891 and served as president for an impressive eleven-year tenure at the Naturalists' Society of New South Wales. He later took on the position of government entomologist with the agricultural department of New South Wales in 1896.