•522 The American Geologist. May, 1897 
ing hnd occasion to study interesting developments of the 
kind as well as others on Vancouver and Redonda islands, I 
hope to take occasion to describe them as further striking 
illustrations of this mode of genesis of magnetite.* Associa- 
ted with the same secondar}^ developments also occur concen- 
trations of magnetite in workable quantities within compass 
of basic eruptives, d\ie to weathering action, the locus of 
such products being determined, among other favorable cir- 
cumstances, essentially by contact witli limestone. 
[Paleontological Notes from Bachtel College, No. U.] 
A NEW DINICHTHYS DINICHTHYS KEPLERI- 
By E. W. Clatpole, Akron, O. 
(Plate XX.) 
TJie new species of Dinichthys figured in the acconjpanying 
plate was found by Dr. W. Kepler, now of Clyde, O., and is in 
his possession. It is one of the largest and most massive 
forms yet known, equalling in size Z>. hertzeri of the Huron 
or jb. terrelli of the Cleveland shale. Unfortunately the spec- 
imen is broken through near the middle and only the posterior 
portion is available for description. Well aware of the inter- 
esting nature of the fossil and knowing the special value of 
the anterior portion Dr. Kepler with praiseworthy diligence 
employed two men for three days in digging and searching 
near the spot in the hope of recovering the lost piece biit in 
vain. The fracture is along the line of a natural joint and 
very probably the two sides had parted company when they 
were loosened from the cliff by the undermining action of the 
stream. This is the usual agent of exposure and of course 
one piece of a slab may be brought down by a flood while its 
remaining portion may remain in the cliff for years, and the 
chance of their ever coming together again in the cabinet of a 
geologist is infinitesimally small. Quite sufficient however of 
the fossil remains to establish its distinctness. 
It was found in the Cleveland shale of the Rocky river val- 
ley and is remarkable for its striking resemblance to the origi- 
nal specimen of the genus Dinichthys hei'tzeri, discovered so 
many years ago in the Huron shale at Delaware, O., by Dr. 
*Vid. (J. P. Kimball) Am. Joui-. Sc. xlii, 1791. p. 231 ; Amer. Geol. 
viii, 1891, p. 351. 
