28 Canadian Record of Science. 
About three hundred and fifty feet above the base, where 
the measures are flaggy, tracks of annelids are again abun- 
dant. Beside the smaller trails and burrows, there are fre- 
quent tracks of a marine animal, similar to markings on the 
Fucoidal sandstones which by Prof. O. Torrell have been 
referred to the genus Psammichnites ; and avery similar, if not 
identical track, occurs on the surfaces of the purple-streaked 
sandstones of Band 0 in Division 1. of the St. John group; 
this track is different from Cruziana semiplicata, Salt., 
and C. similis, Bill., which belong to a higher Cambrian 
horizon. 
About fifty feet above this horizon occur fine shales, with 
a recurrence of the seaweed-like organism, and some ninety 
feet higher up, in a loose fragment of sandy shale, a very 
thin dorsal valve of a brachiopodous shell of considerable 
size was found ; this shell is something like Lingula monili- 
fera of the EKophyton sandstone, but is wider, has a less 
prominent beak, and the fine, radiating ridges on the sur- 
face do not exhibit a beaded crest. Some of the layers 
in this part of the series abound in soft, green grains, similar 
to the glauconite grains of the cretaceous and other forma- 
tions, but the paste enveloping them is red. 
A number of beds between this point and the uppermost 
measures exposed, contain worm casts and burrows, so that 
the entire series gives evidence of the existence in America 
of living forms during the whole of this introductory epoch 
of the Cambrian age, and encourages the hope that import- 
ant additions will in time be made to our knowledge of the 
earliest forms of life of the Paleozoic ages. 
ADDITIONAL SPECIES OF THE St. JoHN GROUP. 
Some interesting additions have also been made to the 
faunas of other Cambrian horizons. The measures on the 
St. John R., corresponding to those of Band 6 in Division 1 
of the St. John Basin contain a calcareous organism, which 
may be referred to Oldhamia ; it resembles O. antigua, but 
branches less freely. In the same sandstone occurs an 
elegantly ornamented Lingulella (?) of peculiar form; it 
