A. R. Hortvood — Upper Trias of Leicestershire. 25 



years detailed work as a geological surveyor. It gives a succinct 

 account of the relation of the Eed Marl to the older rocks so far as the 

 stratigraphical relations are concerned. 



A short but valuable paper by W. Keay and M. Gimson upon the 

 relation of the Keuper Marl to the Pre-Cambrian rocks at Bardon 

 Hill throws into light the enormous amount of denudation to which 

 this deposit has been subjected, a fact reflected in the Drift deposits 

 to the south, largely made up of Trias debris. In 1907 T. 0. Bosworth 

 wrote upon the origin of the Upper Keuper of Leicestershire, 

 attributing it to desert agency, citing as evidence cases of wind action 

 and other subaerial evidences wheji in contact with syenitic or granitic 

 rocks. He has pursued this point farther in a paper but recently 

 published, but of which I have not seen a copy. 



From 1907 to 1909 the reports upon the Trias flora and fauna have 

 contained articles upon the Leicestershire Upper Keuper, summarizing 

 the palaeontology of this period. In 1910 the writer's views as to 

 the origin of the Trias, i.e. as a delta formation, were promulgated, 

 and though combated at the time appear to be receiving wider 

 acceptance. 



The llhsetic beds of Leicestershire have been described by a number 

 of authors. The first published notice of them was by Brodie in 1874, 

 but J. Plant indicated their probable occurrence on the Spinney Hill 

 range in the sixties, a prophecy later fulfilled. It has been stated 

 that Eheetic beds were found by Robert Etheridge at Barrow-on-Soar. 

 If so he never published the fact, but in 1874 H. B. Woodward 

 described a visit with a colleague to compare the Bhsetics there with 

 those at Newark. J. Plant also in this year referred in a report upon 

 the Geology of Leicestershire to the occurrence of Rhsetics at Leicester. 

 It was not till 1876 that Mr. Harrison published his description 

 with sections and lists of fossils, including Ophiolepis damesii and 

 . Pholidophorus mottiana at Spinney Hills. He assigned, as did others 

 at that time, the Tea-green Marls to the Ilhsetics. Later the same 

 beds were described by Mr. H. E. Quilter. Edward Wilson had 

 been visiting this district, being then at Nottingham Museum, and he 

 collaborated with the last-named in a joint description of a new 

 section at Glen Parva, which has since been much opened up and 

 presents one of the finest exposures in the country from the Lias to 

 the Hed Marl. Messrs. Bates & .Hodges described a fresh section at 

 Spinney Hill in 1886. Dr. A. S. Woodward examined the fossil 

 fishes at Glen Parva, regarding them as Ph. h'gginsi, of which 

 Ph. nitidus was a small form only. 



From 1890 onward Montagu Browne worked hard at the local 

 lihsetics, paying visits to Aust, Watchet, and elsewhere to obtain 

 a wider knowledge of the formation, and established quite a 

 reputation as an authority on the formation for twenty years or 

 more. He found Ceratodus in material from Spinney Hill. When 

 the Great Central Railway was being laid down he visited the then 

 tine section of Rhsetics at East Leake, at the suggestion of W. T. 

 Tucker, F.G.S., of Loughborough, and obtained quite an interesting 

 series of fossils therefrom. His last paper upon the Bhaetics in 1901 

 summarized all previous knowledge of the Glen Parva section. This 



