Keywords: The Quarterly journal of the Geological Society of London (13365229024).jpg 1849 <br> EINNEY S REMARKS ON SIGILLARIA <br> 19 <br> posing tlie sides so as to allow a mould to be made which has been <br> subsequently filled with soft mud now forming the ironstone from <br> above But if the roots were lying level on their decomposition the <br> pressure of the mud and vegetable matter placed over them being <br> much greater than in the first instance would press down the moulds <br> and flatten them Effects similar to those above described have <br> taken place in the specimens both round and flattened found lying in <br> the King coal <br> The vascular axes of Stigmarise vary much in their size and do not <br> appear to increase in propor- <br> tion to the diameter of the <br> root for they are often larger in <br> small specimens than in those <br> of greater dimensions Fig 1 <br> represents the natural size of a <br> Stigmaria in pyrites in my pos- <br> session about 1 inch in dia- <br> meter having its vascular tissue <br> gths of an inch in breadth <br> whilst in fig 2 the specimen <br> from the King coal this axis <br> is only a little more than yV h <br> of an inch although the dia- <br> meter of the root was about 2 <br> inches <br> Fig L <br> Fig 2 <br> This specimen I procured from Mr W C Williamson of Manchester in ex- <br> change for another It was found I believe in the neighbourhood of Ashton- <br> under-Lyne <br> c 2 36933820 113689 51125 Page 19 Text v 6 http //www biodiversitylibrary org/page/36933820 1850 Geological Society of London NameFound Sigillaria NameConfirmed Sigillaria EOLID 13132168 NameBankID 4343184 NameFound Stigmaria NameConfirmed Stigmaria EOLID 6133541 NameBankID 4853119 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 6 1850 Geology Periodicals Smithsonian Libraries bhl page 36933820 dc identifier http //biodiversitylibrary org/page/36933820 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-23 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/13365229024 2015-08-26 11 50 41 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1850 Photos uploaded from Flickr by Fæ using a script |