82 
SUPPLEMENTAL NOTES, 
CONSISTING OF 
REMARKS ON SOME OE THE MOST IMPORTANT 
GROUPS OE EORAMINIFERA MENTIONED IN THE FOREGOING 
CATALOGUE. 
I. NOTE ON EOZOON. 
(See page 1.) 
Eozoon is a Foraminifer with hyaline and vascular shell-structure, and very 
numerous irregular minute chambers, outspread for about a square foot, and 
heaped up nearly half as high, with diminishing size. 
The sarcode has been replaced by magnesian silicates (as is frequently the 
case with interiors of both recent and fossil shells and tests of small size). * The 
chamber-walls had apparently a tubularity, like that of Nummulina — this 
being in many cases traceable, by the tubuli having been occupied by very 
fine parallel threads of silicate, difficult of discrimination from a simply fibrous 
mineral. Where the white calcareous bands are thick, we have in them the 
“ intermediate ” or u supplemental skeleton/’ traversed by numerous ramifying 
and sometimes lobular threads of silicate, sometimes of caleite, representing the 
pseudopodial passages and vestibules. The stolons, also, from chamber to 
chamber, are sometimes apparent. The chambers are irregular in size; and, 
though separated sometimes by the thickest layers of “ supplemental skeleton,” 
are often close together, indeed packed so closely that the rock is there merely a 
mass of granular silicate, representing the scarcely divided segments of sarcode. 
The enormous pressure ( lateral as well as vertical) to which the rock has been 
subject has modified the organism to a vast extent in many places. 
The following are the chief memoirs treating of Eozoon : — 
W. Logan, Q. J. G. S. vol. xxi. 1865, p. 45 &c. 
J. W. Dawson, „ „ p. 53 &c. I Canad. Nat. April 
W. B. Carpenter, „ „ p. 58 &c. f 1865. 
T. S. Hunt, „ „ p. 67 &c. J 
T. R. Jones, Popul. Science Rev. vol. iv. 1865, p. 343 &c. 
W. B. Carpenter, Intel! Ofiserv. no. xl. 1865, p. 278 &c. 
, Proc. Royal Soc. no. 93, 1867, p. 503 &c. 
, 1 The Microscope/ &c. 4th ed. 1868, p. 517 &c. 
, Ann. & Mag. Nat. Hist. June 1874. 
J. W. Dawson, ‘ The Dawn of Life/ 8vo, London, 1875. 
T. R. Jones, in 1 Micrographical Diet./ article 11 Eozoon ,” 1875. 
J. W T . Dawson, Q. J. G. S. vol. xxxii. 1876, p. 66 &c. 
