ARTICLE II. 
NOTE ON ARCH^OZOON. 
By G. F. Matthew, LL.D , F.R.S.C. 
Read 4th Dec., 1906. 
In the year 1891, the writer of the following note, then Presi- 
dent of this Society, brought before it certain discoveries re- 
lating to organisms of lew type found in the ancient rocks around 
St. John. 
This was partly in the presidential address of that year, and 
partly in an article on ‘‘Eozoon and other low organisms in 
Laurentian rocks at St. John.” * 
In part these two papers relate to the genus Archaeozoon, 
examples of which had then lately been brought to the writer’s 
attention. As this organism was subsequently found in other 
localities than that from which it was originally described, and as 
a similar organism has recently been found in the Pre-Cambrian 
rocks in the Rocky Mountains by officers of the U. S. Geological 
Survey, and has been figured in a Bulletin of the Geological 
Society of America by Hon. C. D. Walcott, Director of the above- 
named Survey, the present seems a fitting time to gather up the 
information relative to Archaeozoon and present it before this 
Society. 
In the presidential report above cited, Archaeozoon is referred 
to in the following terms : * 
“ The second horizon of organic forms is in the upper lime- 
stones ol the Upper Series (of the Laurentian area of rocks 
in the vicinity of St. John). The organism found here 
is one of the calcareous coral-like structures, somewhat like certain 
forms found in the basal beds of the Cambrian (and of the Ordovi- 
cian). Its structure has not yet been studied, but en masse it con- 
sists of elongated cylindrical objects, which are from one inch to 
♦ Nat. Hist. Soc. of N. B„ Bull. IX, p. 32, par. 3. 
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