From the preface:
The present monograph contains an account of the Indian missionaries, both Brahmana and Buddhist, who crossed the frontiers of India to propagate their religions in various countries, particularly Suvarnabhumi (the Land of Gold), now known as South-East Asia.
It is an undoubted fact of history that Brahmanism and Buddhism found their way into South-East Asia from India…But all told, the fact remains that the labours of the Indian missionaries in the propagation of these religions in South-East Asia, have been hitherto buried in oblivion and it has been my earnest endeavour to unearth them.