298 Canadian Record of Science. 



reads as follows : " The Upper rocks," (i. c, the Upper 

 Eed Slate and Sandstone group) " are found again near 

 Union Eailway Station, and also at McArras Brook." 



On page 67P, Mr. Fletcher quotes Dr. Honeyman's views 

 on the age of these rocks : ^ " They are certainly not Lower 

 Helderberg, and may therefore be Devonian," and on 

 p. 68P, the same writer quotes Sir William Dawson,"^ in 

 which he regards them as '•' Pre-Carboniferous although 

 not separated from the Silurian." 



Mr. Fletcher there describes strata on McArras Brook as 

 follows : " Grood exposures are also cut by McArras Brook 

 behind the mass of amygdaloid at the shore, consisting of 

 red, flinty, micaceous, jointed sandstone and slate, often 

 concretionary, interstratified with greenish thick bedded 

 and flaggy sandstone, containing traces of carbonate of 

 copper and iron pyrites ; the brook being rocky up to the 

 shore road. From the latter, a collection of fossils made 

 by Mr. Weston, comprising fragments of plants and fish 

 teeth, not certainly determinable, together with certain 

 interesting footprints Protichnites carbonarius. 



In his " Geology, Chemical, Physical and Stratigraphi- 

 cal," Sir Joseph Prestwich^ makes the following statement 

 regarding the " Old Eed Sandstone " of Herefordshire, 

 which enables geologists to correlate and recognize simi- 

 lar strata with a marked degree of proximity to certainty 

 wherever they occur. 



" The Old Eed Sandstone of Herefordshire was long 

 thought to be non-fossiliferous, a few fragmentary speci- 

 mens only have been found, when in the railway cuttings 

 near Ledbury, the Eev. W. S. Symonds (see Quart. Journ. 

 Oeol. Soc, Vol. 16, p. 193, and Vol. 17, p. 152) discovered 

 in the lowest beds (the Ledbury shales) of that formation 

 remains of Pterygotiis, Oiichus, Pteraspis and Ccphalaspis, 



1 Trans. Nov. Scot. Inst. Sc. Vol. 3, i>. 13. 



2 Acailiau Geolos)', V- -^IC, line i, and Supplement, p. -19, line 15. 



3 In cliap. VI., " The Devonian System : ' The Old Reil Sandstone,' " p. S2. 



