Coast of Coromandel from the Northern extremity of the Pulicat shoal to Armegon Hill as also the Aremegon shoal & reef off point. Pondy with the anchorage or harbour formed between Armegon shoal & the shore with a chart exhibiting the track of the H.C. ship Nercus while in search of the London Bank by Capt W. Max filed 1821.