Geology and Mineralogy. 165 



Track of a gastropod mollusc? Pawtucket plant beds. 



Protichnites narragansettensis, n. sp. Pebble, dark arenace- 

 ous shales, North Providence. 



Remains of a Crustacean? Black shales, Valley Falls. 



Ostrakichnites carbonarius (Protichnites carbonarhis) Daw- 

 son. Boulder, red shale, South Attleboro. 



Anthracomartus loooclruffi Scudd. Pawtucket plant beds. 



Mylacris packardii Scudd. Bristol plant beds. 



PJtoblattina, 9 species, Scudd. Pawtucket plant beds, etc. 



Gerablattina scapularis Scudd. Pawtucket plant beds. 



Gerablattina fraterna Scudd. Silver Spring, East Provi- 

 dence. 



Phapidiopsis diversipenna Scudd. Cranston plant beds. 



Paralogus wschnoides Scudd. Silver Spring, East Provi- 

 dence. 

 "The presence of the Spirorbis and of the tracks of two marine 

 Arthropods suggest that the' Rhode Island plant beds, even if in 

 general of fresh-water origin, were deposited where the sea had 

 access to them. The presence of these marine fossils, with the 

 fresh-water naiad, Anthracomya arenacea, strongly suggests that 

 the horizon of the black shales of Providence and also of the red 

 and greenish beds of Attleboro, Mass., belong to the same hori- 

 zon as those of the South Joggins of Nova Scotia, which is Upper 

 Carboniferous, the rocks there consisting of sandstones and dark 

 carbonaceous shales, frequently becoming reddish. The South 

 Joggins shales also contain the remains of Anthrapalsemon, which 

 should be looked for in the Narragansett Coal Measures. Thus 

 far, then, the animal remains confirm Lesquereux's reference of 

 the dark plant-beds to the Upper Coal Measures. 



These beds also appear to be higher in the series than the 

 Middle Carboniferous Mazon Creek beds of Illinois, which con- 

 tain a larger number of marine animals, viz: Belinuridse (Eup- 

 roops, Prestwichia and Belinurus), besides Anthrapalaemon and 

 Acanthotelson, together with the impressions of marine annelid 

 worms." w. 



3. Geologiccd Survey of Canada. Summary Pep>ort of the 

 Geological Survey Department for the year 1899 ; by Geokge 

 M. Dawson, Deputy Head and Director, pp. 1-224, Ottawa, 1900. 

 — The Canadian Survey was conducted with its characteristic 

 energy during the year 1899. The finding of gold in the Yukon 

 District, and the search for petroleum on the Saskatchewan has 

 given these regions special importance, but activity has been 

 shown in all parts of the country. Sixteen . field parties were 

 engaged during the summer, viz : in British Columbia, 3 ; Yukon 

 District, 1 ; Great Slave Lake, 1 ; Alberta (boring operations), 1 ; 

 Saskatchewan, 1; Ontario, 3; Ontario and Quebec, 1; New 

 Brunswick, 2 ; Nova Scotia, 2 ; Ungava (East coast of Hudson 

 Bay), 1 ; while several of the staff were engaged on special inves- 

 tigation upon collections, or materials, requiring laboratory study. 

 The investigations in the Yukon District, under direction of 



