[155] “Narrative of the U. S. Explor. Exped.”: vol. v., p. 40.

The particular form of the disease to which the name Tokelau Ringworm should be applied has a very wide distribution. Mr. G. W. Earl in his work on “The Papuans” (London, 1853; p. 37) speaks of this disease under the name of “icthyosis” as being very prevalent amongst all the coast tribes of the Indian Archipelago: but I gather from some references made by Mr. Wallace to this affection in his account of the Malay Archipelago (3rd edit., 1872, p. 449) that it is not to be found so much amongst the pure Malays as amongst the tribes of mixed origin. Mr. Marsden in his “History of Sumatra” (London 1811, p. 190) refers to it as being very common amongst the inhabitants of Pulo Nias, an island which lies off the west coast of Sumatra. His description of the disease leaves no doubt as to its true character, but he himself is uncertain as to whether it is an “impetigo” indicating a mild type of leprosy, or whether it is not ordinary “shingles” or a confirmed stage of ringworm. The same disease was recently observed by Mr. H. O. Forbes amongst the natives of Timor-laut and of the island of Buru, islands which lie at the opposite end of the Indian Archipelago.[156] Two centuries since, Dampier well described this disease in the case of the inhabitants of Mindanao in the Philippines and of those of Guam in the Ladrones.[157]

[156] “A Naturalist’s Wanderings in the Eastern Archipelago;” pp. 331, 402; London, 1885.

[157] “Voyage round the World.” London 1729, vol. i., p. 334.

Coming to New Guinea, I find that this disease prevails all along its coasts and in many of the off-lying islands, such as the Ki and Aru Islands, Teste Island, Woodlark Island, etc. The authorities on which I have founded this general statement are numerous and include, Modera, Bruijn Kops, Wallace, Mosely, Miklouho-Maclay, Comrie, W. Turner, Chalmers, Wyatt Gill, Romilly, Lyne, and others, whose descriptions, though they often did not recognise the true character of the eruption, leave no reasonable doubt on the matter.

This disease was observed by Mr. Wilfred Powell to be very frequent amongst the natives of New Britain and the Duke of York Islands, where it is called “buckwar.”[158] Dr. Comrie, R.N., when serving in H.M.S. “Dido,” found it to be very frequent amongst the natives of New Ireland.[159] Through the islands of the Solomon Group it is widely spread, as I have already shown: and from them it has extended to the different groups to the eastward, reaching the Gilbert, Ellice, Tonga and Samoa Groups.

[158] “Three years among the Cannibals in New Britain,” London, 1883, p. 54.

[159] Journal of the Anthropological Institute, vol. vi. p. 102.

In the Western Pacific we are able in some instances to trace the eastward extension of this disease during the last half century. Dr. G. Turner in his annual report of the Samoan Medical Mission, dated October, 1869, refers to the recent introduction of the Tokelau Ringworm amongst the Samoan Islanders as the introduction of a new disease. It was brought to Samoa from Bowditch or Tokelau Island where it had been also unknown until about ten years before, when it was introduced by a native of the Gilbert Group who had been landed by a whaler. The Gilbert or Kingsmill Islanders, according to the narrative of Commodore Wilkes, believed that the disease came from the south-west, and called it the “south-west gune,” the nearest islands in that direction being those of the Solomon and Santa Cruz groups, between 800 and 900 miles away. Commodore Wilkes, however, was of opinion that this disease had reached the Kingsmill Group from the Depeyster Islands in the Ellice Group to the south-south-east; and he refers to the circumstance that the disease was most prevalent in the southern islands of the Kingsmill Group, being apparently absent from Makin the northernmost island;[160] but this distribution of the disease may be also urged in support of the more probable view of the natives that it came from the south-west. We are thus able to trace one probable track of this disease from the Solomon Islands, or one of the groups immediately adjacent to them, across a wide tract of sea to the Gilbert and Ellice Groups, and from there to Tokelau Island, and thence to Samoa. The French navigator, Dentrecasteaux,[161] found the same disease to be very prevalent amongst the inhabitants of the Tonga Islands towards the end of last century; and it seems strange that it did not reach the Samoa Group until about seventy years after. The Tonga natives, however, may have derived it by another and more direct course from the westward, namely through the New Hebrides and the Fiji Groups.

[160] “Narrative of the U. S. Explor. Exped.” vol. v. p. 105.