142 
On the Sands intermediate the Inferior Oolite and Lias of the 
Cotteswold Hills, compared with a similar Deposit upon the 
Coast of Yorkshire. By Joun Lycert, Esq. 
Reap 28TH Jury 1857. 
My friend Professor Buckman having invited me to throw to- 
gether some geological conclusions to serve as a foundation for 
a discussion, I select a subject which has already received some 
consideration at the hands of the Club, and which, from its local 
position, and a difference of opinion which has arisen with respect 
to the zoological affinities of its fauna, seems to claim some 
further examination. I allude to the series of micaceous sands 
and marls which are situated intermediate the Inferior Oolite 
and Lias, and which are known to English geologists generally 
as the Sands of the Inferior Oolite, and to continental cultivators 
of the science as the Jurensis marls; the Grés Supraliassique ; 
the Hydroxyde Oolithique; the superior portion of the Upper 
Lias; the Lias Zeta of Quenstedt, &. Dr. Wright* and Mr. 
Hull+ have each recently exemplified this deposit in copious 
and well-known memoirs; but as regards the Cotteswold Na- 
turalists’ Club, the present is the first communication which has 
been presented to it in a written form. The conclusions arrived 
at by the authors above referred to are based solely upon zoo- 
logical evidence, and are therefore liable to be affected by sub- 
sequent additions, which may tend to alter the relative propor- 
tions of Oolitic or of Liassic species found in the deposit ; and 
as some interesting accessions to its fauna have recently been 
made, more especially in the lower fossiliferous zone, which was 
but little known until within these few months, I present a 
notice of them, with the remark, that although as contributions 
they possess some value, they by no means afford a triumph to 
any foregone theoretical conclusions ;—that they may be com- 
pared rather to a portion of the materials forming a part of the 
structure of a buried edifice whose proportions are not yet fully 
developed, and of whose full history so much yet remains to be 
* “Qn the so-called Sands of the Inferior Oolite.”” Journ. Geol. Soc. 
1856. 
t+ Mem. of the Geol. Surv. of Gr. Brit. “The country around Chelten- 
ham.” 1857. 
