364 THE MEDALS OF CREATION. Cuap. X. 
types in an interesting memoir in the Transactions of the 
Manchester Philos. Soc. vol. viii. 1847. As in most of the 
1. 3° 667 sleet eae 
cretaceous strata, the prevailing species are referable to the — 
genera Textularia, Rotalia, Rosalina, Cristellaria, Lagena,* — 
&c. There are numerous spicula of sponges, and needle-like — 
calcareous prisms, which are the detritus of the fibrous shells, — 
called Inoceramus. 
FoRAMINIFERA OF THE OotiTE, Lias, &c.—The occurrence 
of certain genera in particular rocks has been incidentally 
noticed in the previous descriptions, and it is needless to 
particularize any localities of the Oolite, Lias, and other 
secondary deposits. It must suffice to state that Dr. Car- 
penter, Prof. Williamson, Prof. Phillips, Mr. Sorby, Mr. 
Rupert Jones, and other able observers, have figured and 
described foraminifera from the strata between the Chalk 
and the Carboniferous formations: the report to be drawn 
up by the two first-named gentlemen for the British Asso-_ 
ciation, will present a reswmé of the British fossil genera and 
species. 
It is deserving record, that no vestiges of foraminifera 
have been found in the Wealden strata ; the fluviatile origin 
of those deposits renders it improbable that the remains of 
these marine organisms should occur in great numbers, yet 
from the estuary character of some of the beds, the presence 
of foraminifera might be expected. 
FoRAMINIFEROUS Deposits OF THE UNITED STATES.— 
Dr. Bailey has made us familiar with the foraminiferous 
rocks of North America, The various memoirs on this class 
of fossil animalculites, and on the diatomaceze (ante, p. 93), 
published in the American Journal of Science, and in the 
Smithsonian Transactions, attest the acumen, and un-_ 
wearied spirit of research, of this able observer. Not only 
from the United States, but from numerous localities in 
* This interesting type of Foraminifera is the subject of a Memoir — 
by Prof, Williamson ; Annals, Nat, Hist, 1848, vol, i, 
Sahel 
