The speech of the Tasmanian Aborigines

The reconstruction of the speech of the extinct Tasmanian Aborigines seems at first almost impossible, owing to the paucity and dubiousness of the records we possess; but after careful research we find that, though the records are scanty, yet they are fairly ample, considering the comparatively small number of the constituent parts of the language, and a reasonable degree of probability can be attained by a patient study of the material available.
As a trained philologist, I am well aware of the classification of the languages of mankind, and have a working knowledge of a certain number of them; but I find the characteristics of the Tasmanian speech so primitive and unstable, that I cannot see my way to enrol it in any of the classes given by the text-books.
Practically all the available material is contained in H. Ling Roth's work, "The Aborigines of Tasmania" (Halifax, 1899), supplemented by H. De Charency's "Recherches sur les Dialectes Tasmaniens" (Alencon, 1880).
What I have endeavoured to do is to find the principles by which the speech of the primitive race of the Tasmanians was governed. It seems that the languages of the Australian continent are far more developed; however, this is a subject for further research.