422 PKOCEEDIlirGS OF THE GEOLOGICAL SOCIETY. [DcC. 15, 



exist — viz. limited areas of Wealden or Purbeck beds, and loose, 

 scattered, or drifted remains of the Oolite, Lias, and Cornstones. 

 Under these he places the older rocks of the district — the Yellow and 

 Eed Sandstones; for, unlike other authors, he did not group the 

 Cornstone with the Old Red Sandstone : this memoir was illustrated 

 by ten plates of fossil remains. 



It is unnecessary that I should here advert further to the over- 

 lying formations containing Wealden or other fossils of the OoHtic 

 series, since they have been found in mere patches only, always 

 overlying the rocks under consideration, and imbedded in argilla- 

 ceous and incoherent strata with thin shreds of limestone, the whole 

 entirely distinct from the underlying cornstones and yellow and red 

 sandstones on which they repose. In fact, the Oolitic Wealden 

 patch at Linksfield* rests at once on hard siliceous cornstone, the 

 upper surface of which has been powerfully eroded, showing that 

 there is no sort of natural connexion between these two deposits. 



The discovery of Reptilian remains in certain light-yellow sand- 

 stones was made subsequently to the publication of Mr. Duif 's work. 

 The single specimen with the impression of scutes of Stagonolepis, 

 found at Lossiemouth, and which Agassiz named after Mr. Robertson, 

 was first in the possession of Mr. Duff; so also was the specimen 

 of Telerpeton, found in the Spynie quarry, and, as is well known, 

 transmitted by that gentleman to London through Capt. Brickenden. 

 The short memoir by the last-named gentleman, which is pubhshed 

 in our Journalf, is very correct in defining the exact position in 

 which the Telerpeton was found ; and the description of the animal 

 by Dr. Mantell J, which accompanies it, completes this brief sketch 

 of the progress of discovery in the Old Red steata and fauna around 

 Elgin. 



Succession of the Stratified RocJcs in the Northern part of Moray- 

 shire. — Let us now proceed to consider the order in which the mineral 

 masses of Moray are collocated. 



The best natural sections of the whole series of strata of which 

 the Old Red Sandstone mainly consists in this part of its range, are 

 seen upon the banks of the Findhorn River. To the south-west of 

 Altyre (the seat of Sir W. Gordon Gumming), the crystalline rocks, 

 in the condition of quartzose and gneissose flags, which have been 

 penetrated by granite-veins, roU over on a partial axis, dipping both 

 to the S. by W. and N. by E., and with a strike from E. by S. to W. 



Reposing on the crystalline rock, the following succession of strata 

 is exhibited as you descend the Findhorn River to Cothall near 

 Forres, the dip of the whole not exceeding 8° to the IST.N.W. : — 



a. Lowest beds, shaly and thinly laminated red and grey grit, with black and 

 white mica, and occasional concretionary blotches of green earth, h. Angular 

 conglomerate, composed of both large and small fragments of the adjacent 



* See Dr. Malcolmson's note. Proceed. Geol. Soc. vol. ii. p. 669 ; and Capt. 

 Brickenden's Section, Quart. Journ. Geol. Soc. vol. vii. p. 291. 

 t Vol. viii. p. 97. X Ibid. p. 100. 



