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For the names of several other writers who reported the use of the bull-roarer more than fifty years ago, see my article on this subject in the "Journal of the Anthropological Institute," vol. xxvii, pp. 52-60.
The bull-roarers illustrated in the accompanying plate form the most 
9. Bull-roarers used by the Australian Aborigines. representative collection with which I am acquainted. The figures are drawn simply as diagrams, showing the shape and outline of the several instruments, without any shading to introduce perspective. It is thought that accurate drawings of the various instruments will enable the student
