216 Canadian Record of Science. 
jacent laminz. This structure reminds an observer of the 
Cenostroma type of Stromatopora, and may be either an ab- 
normal growth of Eozoon, consequent on some injury, or a 
parasitic mass of some stromatoporoid organism finally over- 
grown by the Hozoon. The structure of the dolomite shows 
that it first incrusted the interior of the canals, and subse- 
quently filled them—an appearance which I have also ob- 
served in some of the larger canals filled with serpentine, 
and which is very instructive as to their true nature. 
The above statements have reference to state of preserva- 
tion, and are intended to remove misconceptions on that 
subject, but the mere fact of so many coincidences both in 
state of preservation and defects and imperfections between 
Hozoon and ordinary fossils, furnishes in itself, independent- 
ly of other evidence, no small proof of its organic origin. 
Il. NEW FACTS AND SPECIAL POINTS. 
Under this heading, I shall summarize some of the pre 
vious statements, and add some special facts bearing on the 
character of the specimens and their interpretation.* 
(1.) Form of Hozoon Canadense. 
Hitherto this has been regarded as altogether indefinite, 
and it is true that the specimens are often in great conflu- 
ent masses or sheets, the latter sometimes distorted by the 
lateral pressure which the limestone has experienced. The 
specimen from Tudor, however, figured by Sir W. H. Logan 
in the Quarterly Journal of the Geological Society, 1867, p. 
253, and that described by me in the ‘ Proceedings of the 
American Association” in 1876, and figured in my work, 
‘“‘ Life’s Dawn on Harth,” gave the idea of a turbinate form 
more or less broad. More recently additional specimens 
weathered out of the limestone of Cote St. Pierre have been 
* Nos. 1 to 1i were read at the Meeting of the British Association, Sept. 5, 1387, 
and printedin partin Geological Magazine, February, 1888. 
