Gravely graduated in 1906 and became a demonstrator at Manchester in 1907. He worked on collections made in the "Discovery" Antarctic Expedition along with S.J. Hickson and worked on Polychaete Larvae. In 1909 he was appointed Assistant Superintendent of the Indian Museum Calcutta. In 1914, still at Calcutta, he received his D.Sc. for the work on the Oriental Passalidae. He unified the monographs of early observers with the notes of Arrow and Zang to bring to the oriental passalids, and the family itself in general, the classification that is in vogue today with minor alterations.
Dr. Gravely became the Superintendent of the Government Museum of Madras in 1920. Over the next two decades, he undertook the investigation of the littoralfauna of Krusadai Island, Gulf of Mannar, revived the Bulletin of the museum, and embarked on the scientific preservation, study and interpretation of the museum's collections. His work on Arachnida and Mollusca significantly enhanced the collections of the museum in the two zoological groups. He was also responsible for enlarging the reserve collection, particularly of Invertebrates. Dr. Gravely contributed to the overall development of the museum as well. He, along with the Curator Dr. C. Sivaramamurti, ensured in 1938 that the antiquities and industrial art collected by the Museum was organized effectively, into a collection that exists even today. The most important of Dr. Gravely's many contributions to the subject was the monograph he collaborated on with T. N. Ramachandran on the scientific basis for identifying the period of metal images. Dr. Gravely also donated a variety of sculptures, carvings and bronzes to other institutions, including the Prince of Wales Museum, the Lucknow Museum and Dr. Ananda Coomaraswami's Museum in Boston. Dr. Gravely, and P V Mayuranathan considerably enhanced the Herbarium and the botanical collections of the museum. Dr. Gravely pioneered the preservation of bronzes collected by the Museum. He initiated the electrolytic restoration process which has helped preserve not only bronze objects, but also ethnological, pre-historic and numismatic collections. He also built a separate Chemical Conservation Laboratory, the only one of its kind at the time, in 1937.
Other contributions
He was one of the Foundation Fellows of the National Institute of Sciences of India, now the apex scientific body in the country, Indian National Science Academy. He also served as the Secretary to the Asiatic Society in the period 1915-18. His insect and spider collection is in the Indian Museum, Calcutta. It notably contain insects, Arachnida and Myriapoda from limestone caves in Burma, and oriental Passalidae.
Personal life
In 1925 he married Laura Balling and they had a daughter Ann Margaret and a son John Frederic. He supported the Toc H of which the first Indian branch was set up in the "Museum House".
