Editorial Comment. 121 
miners of Iowa. * * * We offer our congratulations to 
Dr. Keyes and the geological corps with which he is associ- 
ated." E. w. c. 
The Fossil Fishes of Canon City, Colorado. 
A little more than two years ago, announcement was made 
by Mr. Walcott of the discovery of fish remains in a red sand- 
stone of lower Silurian age, near Canon City, Colorado. The 
specimens were widely exhibited to the paLneontologists of 
this country and, at the meeting of the International Con- 
gress at Washington, were not only generously displayed, but 
the opportunity of examining the locality of their occurrence 
afforded to, and accepted by many of the visiting geologists. 
Dr. Otto Jaekel, of Berlin, who had done some refined work 
in the microscopic study of fossil fishes, was invited to make 
a close analysis of these remains, and in a recent review of 
Walcott's paper entitled "Preliminary notes on the discovery 
of a vertebrate fauna in Silurian (Ordovician) strata" (1892), 
he has made some interesting observations (Neues Jahrbuch, 
1895, p. If52) thereupon. "The first glance at the remains in 
question," he writes, " at once conveys the impression that 
they are much more closely related to Devonian than to any 
Silurian fishes as yet known." Some of the scales are stated 
to undoubtedly belong to the Holoptijchiida;, other fragments 
are to be ascribed to the placoderms. " The question is now 
this; whether these remains are really of lower Silurian age. 
Upon visiting the locality in 1892, many European geologists 
were, like myself, convinced that the stratigraphic relations 
at this place are not simple and readily made out, as the strata 
have been greatly dislocated by faults. So there seems to be 
at least a possibility that Devonian sandstones are lying be- 
tween those of lower Silurian age, although the immediate 
proximity of lower Silurian fossils in a petrographically sim- 
ilar sandstone and the absence of other Devonian fossils in 
the fish-bearing strata does not support such a suggestion. 
Still its possibility is strengthened by the fact that, if I am 
correctly informed, there are red Devonian sandstones in the 
neighborhood of Canon City, and its probability shown by the 
character of the fossils themselves." J. m. c. 
