194 The Ottawa Naturalist. [January 



Dr. Clarke then discusses "the inter-relations of the faunas 

 of the Rios Maecurd and Curua and the Erer^-Monte-Alegre dis- 

 trict ; and their deg'ree of equivalence with faunas of other 

 regions." The peculiar association of fossils in the sandstones 

 of the Rio Mje::uru leads the author to state: "There is no 

 similar association of trilobitic species in the North American 

 faunas," yet there are distinct Lower Devonian (Hercynian) traits. 

 There are no CephalopoJi in all the Para Devonian faunas so far 

 as known. A " Lower Devonian" facies is indicated by the 

 Gasteropoda. The Pelecypoda outnumber the Brachiopoda and 

 indicate an eminently Devonian facies in part about Upper Helder- 

 berg with " Spiriferen-sandstein " affinities, also inclination 

 towards Middle Devonian or Hamilton. The Brachiopoda indi- 

 cate Upper Helderberg and Hamilton affinities, many forms hav- 

 ing a Hercynian and Lower Devonian aspect. 



Then follow discussions on the " Sandstones of Erer6," the 



" Sandstone of the Rio Curua." &c., in which the author cites the 



conclusions of Sir William Dawson on the two Sporangites ( Pro- 



tosalvinia Braziliensis and P. bilobata), and closes with a table 



showing the vertical and geographical distribution of the same or 



allied specific types. 



H. M. Ami. 



MINING STATISTICS. 



The Report of the Ontario Bureau of Mines shows that dur- 

 ing the first half of 1900 the yield of gold was $156,269 ; silver, 

 $51,000; arsenic, $8,980: zinc, $900; iron, $19,532. Two 

 blast furnaces smelted $511,209 worth of ore. The open heartti 

 steel produced was valued at $25,515 ; nickel, at $413,771 ; 

 copper ore, $169,986. The total value of metal products for six 

 months was $1,353,287, or tuo-thirds as much as for the whole 

 of last year. In 1899 Ontario produced forty per cent, of the 

 world's nickel. 



