King and Rowney — On Eozoon CanadenseJ^ 
151 
1 5th. The ''regular alternation of lamellae of calcareous and siliceous 
minerals" (respectively representing the "intermediate skeleton," and 
" chamber casts") occasionally seen in ophite, and considered to be a 
fundamental fact " evidencing an organic arrangement, is proved to 
be a mineralogical phenomenon by the fact that a similar alternation 
occurs in amphiboline-calcitic marbles, and gneissose rocks.^' 
1 6th. In order to account for certain untoward difficulties presented 
by the configurations forming the canal system," and the aciculi of the 
''nummuline layer" — that is, when they occur as ''solid bundles^' — or 
are " closely packed^'' — or " appear to he glued together^'' — Dr. Carpenter 
has proposed the theory that the sarcodic extensions which they are 
presumed to represent have been turned into stone" (a " siliceous 
mineral") "by I^ature's cunning" ("just as the" sarcodic layer on the 
surface of the shell of living foraminifers is formed by the spreading 
out of coalesced bundles of the pseudopodia that have emerged from the 
chamber wall") — "by a process of chemical substitution hefore their 
destruction by ordinary decomposition."! "We showed this quasi - 
alchymical theory to be altogether unscientific.'! 
17th. The " siliceous mineral" (serpentine) has been analogued with 
those forming the variously-formed casts (in " glauconite," &c.) of 
recent and fossil foraminifers. We have shown that the mineral 
silicates of " Eozoon" have no relation whatever to the substances 
composing such casts. 
18th. Dr. Hunt, in order to account for the serpentine, loganite and 
malacolite, being the presumed in-filling substances of " Eozoon," has 
conceived the "novel doctrine," that such minerals were directly depo- 
sited in the ocean waters in which this " fossil " lived. "We have gone 
over all his evidences and argaments without finding one to be sub- 
stantiated. 
19th. Having investigated the alleged cases of "chambers" and 
" tubes" occurring " filled with calcite," and presumed to be " a conclu- 
sive answer to " our " objections," we have shown that there are 
the strongest grounds for removing them from the category of reliable 
evidences on the side of the organic doctrine. The Tudor specimen has 
been shown to be equally unavailable. 
20th. The occurrence of the best preserved specimens of " Eozoon 
Canadense^^ in rocks that are in a ''highly crystalline condition!'' (Dawson) 
must be accepted as a fact utterly fatal to its organic origin. § 
* "Quarterly Journal Geological Society," vol. xxii., p. 210; " Proc. Eoyal 
Irish Academy," vol. x., p. 523. 
t " Intellectual Observer," vol. vii., uncoloured plate, fig. 2, a, pp. 292, 294, 
290 ; " Quarterly Journal Geological Society," vol. xxii., p. 222. 
X ''Quarterly Journal Geological Society," vol. xxii., p. 202 ; "Proc. Royal 
Irish Academy," vol. x., pp. 537, 538. 
\ Dr. Carpenter, unable to defend himself against Mr. T. Mellard Reade's 
objection that "Eozoon" only occurs in metamorphosed roclcs [Nature, No. 60), 
takes refuge under the ad captandmn argument, that its " calcareous lamelloe " 
(" intermediate skeleton") " show less departure from the shelly textvu-e than do 
the great majority of undoubted shells, corals, &c., contained in the least altered 
