1 879-1 Notices of Books. 441 
We trust that other of our colonial governments will follow 
the example set at Melbourne. 
Tenth Annual Report of the United States Geological and Geo- 
graphical Survey of the Territories. Embracing Colorado 
and parts of Adjacent Territories ; being a Report of Pro- 
gress of the Exploration for the Year 1876. By F. V. 
Hayden. Washington : Government Printing-Office. 
This bulky and profusely illustrated volume embraces the geology 
of the district, its mineralogy, topography, archaeology, ethnology, 
and, lastly, its palaeontology. In all these departments good 
work has been done, and important results are not wanting. In 
a mine on Mount McClellan, near George Town, solidly frozen 
masses were found at the depth of more than 200 feet from the 
surface. The walls and roof of the workings are lined with ice- 
crystals. The cause of this remarkable phenomenon is not 
known, though it is surmised that chemical changes are in pro- 
gress in the surrounding rocks which effect a fall of temperature. 
What these processes may be remains to be discovered. The 
deposits of tellurets and of uraniferous ores in Colorado are 
remarkably rich, and splendid specimens have been obtained. 
Mr. A. S. Packard, jun., contributes a report on several inju- 
rious insects, especially those attacking the cranberry. If the 
cranberry of America is identical with that of North-eastern 
Europe we should regard its extinction with much equanimity, 
and we can assure all who admire this fruit that they can easily 
reproduce its flavour by adding a stale decoction of nut-galls to 
the common red currant. An instance is given of a beetle 
( Monohammus titillator) which had remained alive in wood for 
at least fifteen years. 
