An image of Queen Victoria by Bassano, scanned from the book The National Portrait Gallery History of the Kings and Queens of England by David Williamson
Hindustan (what the country of India is often referred to as by its natives) is spelled as "Hindoostan" on this map. Even a deeper search of the word's usage around this time rendered very little evidence of this spelling.
This zoomed-in version of the map allows us to compare spellings with the Arrowsmith map, thereby allowing to see the Anglicism of the original map in question.