The third in a series compiling the results of an ethnographical research expedition in the Torres Strait, New Guinea, and Borneo. Written entirely by Sidney H. Ray, a prominent member of the expedition and a renowned scholar of Melanesian languages, the text details a variety of the region's languages.

The fifth in a series compiling the results of an ethnographical research expedition in the Torres Strait, New Guinea, and Borneo. Originally published in 1904, it contains information on the societies and belief structures of the indigenous peoples living in the western islands of the Strait.