886 Scientific Intelligence. 
due to motion in the mitered strata, in a memoir read before the 
Buffalo meeting of the American Association, August ist, 1866, 
entitled “ Gold Panik ” The memoir was published in the 
American Journal of Mining, January 25th, 1868, under the 
heading “ Gold-Genetic Metamorphism, with some views on Vein- 
Genesis, ” and in it Spee, besides other allusions to the subject, 
so widely manifest, while oabde ess themselves gues. of pt 
eat-energy of the interior, must have given birth to, 0 
have been in part transmuted into, heat-motion. Hence ede 
conclusions of great moment, but one or two of which can now 
upon. It follows, for instance, that in our theoretical 
views of metamorphism, we are by no means of necessity limited, 
for our essential chemical excitant, merely to that portion of the 
hypothecated residual cosmical heat which might be supposed to 
ave been retained by the emerging oceanic floor. Neither ele- 
vation nor subsidence (both eee accompanied by enormous 
compression) could occur without of t temperate; though the 
degree of this rise would, of ofa vary very m in various 
parts of the mass. The era of possible Sostamosphie changes de- 
pendent upon the percolation of superheated waters is thus “indefi- 
nitely prolonged, even to the present time: and explanation, b both 
in mode and measure, is Ming presented for our thermal springs 
and many like 
In ae moir, Prof. Wurtz stated the probability, if he did not 
prove thes patel oe of the existence of gold in solution still in our 
are crag lat and netigier its probable fiate discovery, as lately 
eG bY 
5. Pit blends pee slg te Gold Ore in Colanaso--¥ oleae 
© 3 writing lackhawk, Colorado, to one of the e 
ors of this J ournal, says : errs discovery was made some time prs 
a oy Sp iiides a price of $1 per poun Mis 
The same correspondent says : er pou Cloud a Min e has Prd 
duced considerable quantities of an ore of tellurium rich in gol 
