5 66 
[August, 
Notices of Boohs. 
it feeds generally — some authorities say exclusively — upon the 
oleander ( Nerium ), from which it takes its name, and whose 
flowers are well known to be red. 
The conclusion most readers will draw from this sedtion is 
that the colouration of caterpillars is either protective — calcu- 
lated to withdraw them trom observation — or warning, those 
which are unsavoury, mal-odorous, or possibly poisonous, being 
strikingly conspicuous. 
The author’s account of ants, based on prolonged experiment 
and observation, is exceedingly valuable. Though he has not 
succeeded in verifying all the marvels told of “ our six-footed 
rivals,” he yet assigns them “a degree of prudence superior to 
that of some savages.” If he cannot urge that “ ants must be 
moral and accountable beings ” it is because he has elsewhere 
attempted to show that, even with reference to man, the case is 
not by any means clear. His observations as to the effedts of 
different coloured light upon ants seem to show that these 
insedts have the power of distinguishing colour, that they are 
exceedingly sensitive to violet, and that their sensations of 
colour must be very different from those produced upon us. In 
this respedt, if we may trust the conclusions drawn in the first 
of these ledlures, they differ remarkably from bees. 
The last two ledlures deal with archaeological subjedls. Here, 
as might be expedted, Sir J. Lubbock urges upon his hearers the 
importance of more efficient steps being taken for the preserva- 
tion of our national antiquities — a question to which the legis- 
lature has unhappily so far turned a deaf ear. 
For all those who have not time and opportunity to consult 
the original memoirs this volume will prove at once pleasant 
and profitable reading. 
The Relations of Mind and Brain . By H. Calderwood, LL.D., 
Professor of Moral Philosophy, University of Edinburgh. 
London : Macmillan and Co. 
The objedt of this book is to decide the relative claims of the 
two well-known rival theories of mental life. Is a physiology 
of brain and nerve a philosophy of thought, emotion, and will ? 
A school of inquirers — numerous, able, and influential — reply 
to this question more or less distindtly in the affirmative. 
Thought is by some said to be a result of the brain, just as is 
bile of the liver, or urine of the kidneys. Others contend that 
if brain-power and mind-power are not identical, the one is 
nevertheless a measure of the other. These views the author 
examines in the light of recent physiological investigations. 
From an anatomical comparison of several of the best-known 
