152 Screntific Intelligence. 
ing forces were more severe to the eastward in middle Tertiary 
times, and that the main action to the westward was of later date: 
g , 
but that these forces have acted contemporaneously, at all events 
in the post-Pliocene period.” 
2. Note on the Trilobite, Atops trilineatus of Emmons; by 
W. Forpv.—In his paper on “ Fossils of the Utica Slate and 
Metamorphoses of Triarthrus Beckii,’ noticed on page 152 of 
Dw 
A: i, p. 64. The figures are the same in the 
two publications cited. The species represented Emmons 1s 
not the rus Beckii, and of the Utica Slate, nor is it that 
species an the Hudson River group, as maintained by Hall, 
beyond the State of New York, nor at any point west of the 
Hudson River. ; 
Dale’s discovery of an old locality given by Mather,” and the 
writer’s “ verification of the presence of a lower t 
Champlain division by paleontological evidence,” as serving 
simply to confirm Mather’s views. ; 
Whatever may be thought of Mr. Dale’s discoveries 
