66 Messrs. T. R. Jones and W. K. Parker on 
mens came from the east side of this hill, where the Crag 
deposit appears to have been sheltered ; whilst on the west side 
the Crag is almost indurated, and its material comminuted.” 
Mr. Wood adds that the true Bryozoan bank of the Crag (in 
which he found but few Foraminifera) is to be seen in the neigh- 
bourhood of Aldborough, Sudbourne, and Orford, overlying the 
bed wherein shells, with occasional Actinozoa and Bryozoa, 
abound. 
The geological relations of the several deposits of “ Crag” in 
Norfolk, Suffolk, and Essex have been treated of by Mr. Charles- 
worth in the ‘Proceedings of the Geological Society,’ 1835, 
vol. ii. p. 195, &e. (“ On the Crag of part of Essex and Suffolk”); 
in the ‘ London and Edinb. Phil. Mag.’ (Nos. 38 & 42, August 
and December 1835), ser. 3, vol. vii. pp. 81, 465, &e. (“ Observa- 
tions on the Crag-Formation and its Organic Remains, &c.”), 
and in the ‘ Report of the British Association’ for 1836, Trans. 
of Sections, p. 84 (A Notice of the Remains of Vertebrated 
Animals found in the Tertiary Beds of Norfolk and Suffolk ’’) ; 
also by Sir C. Lyell, in the ‘ Mag. Nat. Hist.’ 1839, new series, 
vol. in. p. 313, &e. (“On the Relative Ages of the Tertiary De- 
posits, commonly called the ‘ Crag,’ in the Counties of Norfolk 
and Suffolk’’). Of the three recognized divisions of the “ Crag,” 
the lowest has been known as the “ Coralline Crag” ever since 
Mr. Charlesworth so named it in 1835, on account of its abound- 
ing with little coral-like fossils, which, however, when duly 
studied, were found to be Bryozoa (Polyzoa), Corals being ex- 
ceedingly rare in it. “ Bryozoan Crag” ought, therefore, to 
take the place of this common misnomer; but ‘ White Crag,” 
“ Lowest Crag,” and “ Suffolk Crag” are still better names for 
this division, and are already in use. For general and special 
information on the Crag deposits, the reader can also refer with 
advantage to Lyell’s ‘ Manual of Elementary Geology,’ 5th edit. 
1855, chap. xiv.; and to Phillips’s ‘ Manual cf Geology,’ 1855, 
chap. xiii. In reading the latter, however, “ Bryozoan” must 
be substituted for “ Corallme” and “ Zoophytic,” with reference 
to the particular fossils and beds referred to. 
The collection of Foraminifera obtained by Mr. S. V. Wood 
from the Crag of Sutton comprises about forty-five reputed spe- 
cies, or species and important varieties recorded binomially ; 
and here we must remark that though, zoologically speaking, 
many of the recognized forms of Foraminifera are not species, 
but merely varieties, of different systematic values, yet, for the 
sake of convenience to zoologist and geologist, they have received 
and retain binomial appellations, that stand in the lists like spe- 
cific names. The zoological value of these names is critically indi- 
cated in our papers on the “ Nomenclature of the Foraminifera,” 
