448 UPPER CAMBRIAN AGE OF DICTYONEMA SLATES OF 
Paradise to Bridgetown, and with some interruptions nearly as 
far as the town of Annapolis.” 
In my “Synopsis of the Geology of Canada,’* the following 
paragraph refers to the Silurian of the region in question as pre- 
sented and systematized from the accepted and available sources 
of information :— 
“In the County of Annapolis, Nova Scotia, and in the 
vicinity of Nictaux, Silurian strata occur, including the Nictaux 
iron ore beds and the Torbrook sandstone formation, whilst near 
Kentville, the Aentville formation is seen as well as on Angus 
Brook in the Gaspereau Valley, also at New Canaan with 
Dictyonemu Websteri, Dawson.” 
Slates holding Dictyonema Websteri, Dawson, and thus 
known to occur: (1) At New Canaan, the type locality ; (2) At 
Kentville, N. S., and (3) along the upper portion of the valley 
of Angus Brook, a small stream entering the Gaspereau River 
between the village of Gaspereau and the Avon River shore. 
The general section of the rocks holding the specimens of 
Dictyonema and the truly Silurian fossil-bearing strata of the 
district, in which corals and encrinites and brachiopods occur, as 
furnished me by Sir William Dawson some years ago, distinctly 
showed that he connected the two ina general way only, follow- 
ing the inclination and strike of the strata in that part of Nova 
Scotia which have been affected by the same physical forces 
that disturbed rocks belonging to various members of the Palzeo- 
zoie succession. It is thus seen that the intrusive masses of the 
district have affected not only the Cambrian strata, but likewise 
the later deposits, exclusive of the rocks of the Horton and its 
underlying co-formation, the Gaspereau formation, and the 
Grand Pré formation of later Triassic Age. 
Heretofore, the slates which have yielded the specimens of 
Dictyonema Websteri have been invariably referred to the 
Silurian system, but more recent examination of the type 
specimens of D. Websteri, have revealed a remarkable resem- 
blance to, and the close affinity of this species with the 
* Trans. Royal Soc. Can., 2nd Ser., 1900-1901, Vol. VI., Sect. VI., p. 203. 
