310 Scientific Intelligence. 
A similar fact has been noticed in regard to some recent earth- 
eR in our Rocky Mountain region, which, though quite severe 
the surface veer not felt in the mines below.— Condensed aad 2 
ican Phi L Soe oc., bea 16, 187 9.) This apie i se the results of 
region; and it sind asst us for the first time an accurate idea of 
the ara the 
Sao Paulo and ‘Santa Catharina ao reaches pe the Atlantic to 
o Mar, 
coast a low belt, from er twenty miles broad. e remainder 
region, coven ng the central and western parts 0 of the prov vince. 
rst region is entirely composed of metamorphic rocks, high? 
lined nd with a general strike east-northeast. These, in the 
coast belt, and in the Serra do Mar proper, are “mostly sranites 
and gneisses, representing the Archean of Rio de Janeiro an 
northern Brazil; but further west they consist principally of met- 
amorphic schists, quartzites, marbles, ete., and represent the 
Lower Silurian or Cambrian of Bahia, Minas Geraes and northern 
is) 
discovered species of enaule, i Spirifera, ie 
a 
Streptor 
identical with, aoe of the I fies of the Amazonas. pies 
Deissle ne of N. orth Ameri 
___ The diamonds are found principally in the valley of the river 
Tibagy, and vate pyarely} in other river valleys, as they cTos® e 
