954 The American Naturalist. [November, 
A word remains to be said about Mr. Baldwin’s complaint that his 
pamphlet distinctly insisted on the fact of Organic Selection, without 
regard to any “ particular way ” it may be accomplished. Prof. Bald. 
win did file such a caveat upon all possible ways which man may ever 
invent for proving that Organic Selection may be a fact. But this is 
not the method of Science. She does not feel called upon to invent all 
possible ways before she rejects the sole one offered. When Prof, 
Baldwin does give us some other “ particular way ” than the one he did 
give for the operation of his factor, I will, perhaps, then be able to show 
him it cannot be called “new” with any sort of justice to Darwin and 
to biologists commonly. 
Of the personal tone of Mr. Baldwin’s “ Note ” I have nothing to 
remark, save by way of gratification, that it is unmatched in American 
Science. HERBERT NICHOLS. 
Boston, Oct. 14, 1896. 
ANTHROPOLOGY. 
Pictured Caves in Australia.—In West Australia, New South 
Wales, Queensland, and doubtless in other parts of Australia, where 
the geology is favorable, rock shelters and caves have been recently 
noticed, whose walls are decorated with native allegorical designs and 
figures of men, birds and animals outlined in colour. Mr. T. Wornsop ad- 
dressing the Australasian Association for the Advancement of Science at 
Brisbane in January, 1895 refers to a great number of rock paintings 
of Kangaroos, Lizards, Emus, Flying birds, Snakes and other forms. 
Refering to discoveries of these strange and impressively decorated 
shelters by Sir George R. Grey, Mr. Stockdale, Mr. O. Donnell and 
others, he states that a general similarity characterizes the designs 
wherever found, and describes further the curious method of painting 
generally noted, which appears to consist in smearing the rock surfaces 
with animal fat, pressing the object to be represented against the 
eased rock, and then blowing dry color against it so as to thus stencil 
the outlined form by a surrounding area of contrasting tint. When wet 
color was splashed on, no grease would have been needed. Mr. W. J. 
Enright, the discoverer of numerous painted caves and Mr. R. H. Matt- 
hews describe in particular the abundant figures of human hands with 
1 This department is edited by H. C, Mercer, University of Pennsylvania. 
