68 Sceventific Intelligence. 
they baye no appearance in the plate of being tubuli of Eozoon, 
I have very often shown microscopists and geologists the cell-wall 
along with veins of chrysotile and coatings of acicular crystals 
occuring in the same or similar limestones, and they have never 
failed at once to recognize the difference, “especially under high 
powers. 
I do not deny that the tubulation is often imperfectly preserved, 
and that in such cases the casts of the tubuli may appear to be 
microscopist examining them. How difficult is it in many cases 
to detect the minute See of Nummulites and other fossil 
Foraminitera? How often does a specimen of fossil wood present 
in one part distorted ae sooteen fibers or mere crystals, with 
the remains of the wood forming pbragmata between them, when 
in other parts it may show the most minute structures in perfect 
reservation? But who feauld use the disintegrated gs to 
invalidate the evidence of the parts better preserved? Yet this is 
seca the argument of Professors King and batt and heh 
they have not hesitated in using in the case of a fossil so old as 
Eozoon, and so often compressed, crushed, and es aearojed by 
mineralization. 
Tha 
me progress has been apes and I trust that it will soon be pos- 
sible to bring forward not merely additional specimens pvp? 
of the structure of Eozoon, but fresh evidienns of its wide geograph- 
ical range, and also links of co connexion with fossils of the Paleozoic 
roc e discovery recently made in Massachusetts, and 
alluded to Lh Messrs. Rowney and King, is itself not witho vat im- 
portance. In the meantime un content to rip the webbie! 
tions of Messrs. King and Rowney as nearly exhaustive of the 
natural history of those age forms which may be confounded 
with Eozoon, and therefore as in a certain way useful in the ek 
ther prosecution of the sahjees As already stated, I am at 
