INTKODUCTION. V 



(no doubt identical with Uquisetites columnaris, Brongn.), and on 

 some " subtriangular or inversely cordate carbonaceous plates," 

 ■which, are probably the scales of a female Araucarian cone. In 

 referring to the Brora plants, Murobison makes the following 

 observation : — "If the mode of distribution and the generic 

 characters of these fossil plants be ever reduced under general 

 laws, they will no longer be regarded as anomalies, but will form 

 an important addition to the natural history of the beds with 

 which they are associated.'" 



The Fossil Flora of Great Britain^ by Lindley & Hutton, which 

 appeared in parts between the years 1831 and 1837,' contauis 

 drawings and descriptive notes of several species of Jurassic 

 plants ; several of these were communicated by the younger 

 Williamson, and others by Bean, Murray, Dunn, and Phillips. 

 There is an interesting reference in "Williamson's autobiography 

 to his share in the production of the Fossil Flora. He speaks 

 of Mr. Dunn, Secretary to the Literary and Philosophical Society 

 of Scarborough, as having urged him to undertake the drawings, 

 which were made " at one end of Mr. "WeddeU's kitchen-table, 

 whilst the housekeeper was occupied at the other end with the 

 several processes of providing the day's dinner." ' Williamson 

 was at this time a medical student living in the house of 

 Mr. Thomas Weddell, a practitioner in Scarborough. 



The following list includes such plants from Yorkshire as are 

 figured by Lindley & Hutton. I have added the modem names, 

 and mentioned the museums in which I -have seen some of the 

 figured specimens. The date of publication is appended in each case. ' 



Cychpteris Seani. PL 44, 1832. (Type-specimen in the Scarborough Museum.) 



= Otozamites Beemi (L. & H.). 

 Pecopteris polypodioides. PI. 60, 1832. = Zaccopteris polypodioides (BvOTign.) . 

 Lyeopodites falcatus. PI. 61, 1832. (Type in the British Museum, No. 39,314.) 



Tmniopteris vittata. PI. 62, 1833. = T. vittata, Brongn. 

 Glossoptens Phillipsii. PI. 63, 1833. (Figured specimens in the British Museum, 

 Nob. 39,221 and 39,222.) = Sagenopteris Phillipsi (Brongn.). 



' Murchison (29), p. 317. 

 2 Lindley & Hutton (31-37). 

 s WilHamson (96), p. 36. 



* Bolton (92) does not include any of the Yorkshire Coast plants in his list of 

 figured specimens in the Manchester Museum., 



