Edinburgh Geological Society. 219 



Lower Chalk. A typical section made at Louth was then compared 

 with the grand natm-al section at Speeton Cliifs, as described by the 

 Eev. T. Wiltshire, F.G.S. 



The extensive deposits underlying the Hunstanton Limestone 

 were described as follows : — 1st, Ferruginous sands (unfossiliferous). 

 2nd, a series of limestones, sandstones, and clays, containing a large 

 and interesting suite of fossils, with an undoubted Neocomian facies, 

 but presenting greater affinities with the faunas of certain conti- 

 nental deposits than with that of the English Lower Greensand. 

 For this formation the provisional name of " The Tealby Series" was 

 proposed. 3rd, another and thicker series of sands. In its north- 

 ward development, the Tealby series was described as furnishing 

 beds of ironstone (often of Oolitic structure and of considerable 

 economic value), and finally as graduating into the upper part of the 

 Speeton clay ; while, in tracing it southwards, it is found to become 

 almost wholly arenaceous. 



The author gave lists of the fossils of the different beds, and 

 described the numerous faults, etc., of the district, which he illus- 

 trated by a map and numerous sections. He concluded with some 

 remarks on the age of the various beds, and on the causes of the 

 remarkable red colour of some of them. 



An appendix, containing remarks on some of the fossils, showed 

 that the following well-known species of Sowerby, Ammonites pli- 

 comphalus, Pecten cinctus, and Lucina crassa, are Neocomian, and 

 not Jurassic forms, as has hitherto been supposed. 



The fourth ordinary meeting of the Ediistbukgh Geological 

 Society was held on February 7th, in their rooms, 5, St. Andrew 

 Square, — Mr. David Page, President, in the chair. Dr. Henry 

 Campbell read a paper on " The Bhizopoda, and their importance 

 in geological formations." The skeletons of one order of those 

 animals, the Polythazamia, were abundantly procured on almost 

 every sandy shore, and the fragile shells formed the principal con- 

 stituents of several very important geological formations. Mr. 

 Andrew Taylor read a paper on " The past, present, and future of 

 the Scotch and Welsh mineral oil supplies." 



The fifth ordinary meeting of this society for the session was held 

 on February 21st, in their rooms, No. 5, St. Andrew Square — Mr. 

 Thomas Wallace, in the absence of the President, in the chair. 



Mr. George Lyon, the treasurer, read a paper " On the Shell Mound 

 which was lately excavated by the society in Dalmeny Park." He 

 showed that the mound in question was of very modern origin, and 

 contained nothing of any interest either in a geological or an archaeo- 

 logical point of view. 



Mr. John Henderson read a notice, which was illustrated with 

 specimens and drawings, of " Three Species of Trilobites from the 

 Silurian Beds of the Pentland Hills." They consisted of Phacops 

 Siohesii, Calymene BlumenbacMi, and a species, not yet well deter- 

 mined, belonging to the genus Encrinurus. 



