410 
POPULAR SCIENCE REYIEW. 
patient must lie perfectly still for about ten minutes ; the thermometer may- 
then he withdrawn, when the register will remain stationary at the highest 
level which the mercury has reached. This hook is a cheap re-issue of the 
first edition, and as it is now within the reach of all, so all, we think, should 
have it and read it. Precise in all that relates to modern scientific re- 
search, suggestive in their treatment of the subject, and terse and scholarly 
in style. Dr. Anstie’s Notes” take a high rank in the literature of 
Practical Hygiene, and we trust that their re-issue in a cheap form, while 
meeting a gTeat want, will remove a greater evil — the blind ignorance of 
the public on questions of preventive medicine. 
THE NOVA SCOTLAN GOLD-PIELDS.* 
T he political affairs of Nova Scotia have been recently much discussed, 
but we fear that the industrial and mineral resources of the country 
have hardly received the consideration they deserve. The gold fields of the 
country are unquestionably extensive, and the geological examination of 
them would lead to the inference that they may yet be found in the highest 
degree productive. But even in their present imperfectly worked condition 
there can be little doubt that they are capable of a much vaster and more 
important development than is generally thought. Innumerable obstacles 
exist at present in the way of a profitable extension of the gold resources, 
but that these obstacles are irremovable — as is occasionally alleged — we 
have no reason to believe. Indeed, the evidence collected from all sources, 
which the author of this book has laid before us, induces us to believe that 
Nova Scotia may, under proper management, assume one day a very high 
degree of prosperity. In the volume before us Mr. Heatherington discusses 
his subject from every point of view, and thus brings to a focus, as it were, 
a flood of light which chases away in great measure the clouds of doubt 
which have heretofore attended projected enterprises in this part of the 
American continent. Touching the one and most important question — the 
value of the Nova Scotian gold-fields — Mr. Heatherington does not limit 
himseK to the expression of any opinion of his own, but quotes at consider- 
able length the reports of the several .Government explorers sent out to 
examine the auriferous districts. Professor Silliman, than whom few higher 
authorities exist, states that there is no reason to fear that there wiU be 
any failure in depth of gold product or strength. The formation of the 
country is on too grand a scale geologically to admit of a doubt on this 
point.” jMr. Campbell, another of the investigators, testifies to the presence 
of the gold in considerable quantities, but he is less sanguine in his antici- 
pations of ultimate success. Professor James Taylor also reports that the 
minerals associated with the quartz are rich in gold, and that frequently 
masses of gold itself may be seen with the naked eye. Speaking of the 
'* A Practical Guide for Tourists, JMiners, and Investors, and all Persons 
interested in the Development of the Gold-Fields of Nova Scotia.” By 
A. Heatherington. Triibner & Co. 1868. 
