268 Scientific Intelligence. 
able there will be found connected therewith an abnormal condi- 
tion and considerable breaks in the deposition of the rocks. I 
have thi e the case in connection with the Carbonif- 
erous Limestone of the Mendip range, and its continuation throu 
Ss e h district n see rocks 
ocean, possibly forming reef-like barriers around the edges of the 
Carboniferous _— the fissured veins and floor of this ne onens 
receiving at some periods materials of a or of Lower or 
Middle Lins aoe whilst an occasional capping of the eds of 
Inferior Oolite, left in some Carboniferous janestone trough, now 
— are present in this district, in which it may be seen that 
hilst th = a walls of the vein the usual angen conditions 
vein-s cu, | such as cale-spar, sulphate of ah occa- 
instances there are Sombre the elements of open ‘fissures com- 
municating with the ocean, and greater or less time in the reception 
of their contents. 
dditional note on Hlasmosaurus ; by E. D, Copz.—To my 
preceding note on Elasmosaurus, I a append the following, in con- 
sequence of the reading of a nother criticism by Pr of. Lerpy, in 
the Proceedings Acad. Nat. Sci. Philad. Pisses to April, 1870, 
(issued | ae J Phas be [See p. 139 of this volume,—Ebs 
In this Dr. Leidy agrees with my identifeation of Cimoliasaurns 
and Discos made in 1868 mires Wee them a as t the same. But 
to his determination, Cimoli n exclusively used, 
and has therefore obtained considerable currency ; iscos i 
was founded upon a miscellaneous collection of species, and no 
defined ; 3, the name refers perhaps to an individual peculiarity of 
one of "the eae as suggeste a Leid , and conveys an 
of the genus, where the peculiarity consists of a groove. The 
g 
however be predicted, that no species combinin ining the characters of 
the two will ever be found. All genera in paleontology stand open 
is ris 
_ The Cimoliasaurus grandis (Brimosaurus Leidy) presents 
— of C. magnus and therefore is not an Hlasm 
