32 co»rFEEOxrs wood. 



The specimen from the Blue Lias of Lyme figured under the 

 above name by Lindley & Hutton presents the appearance of an 

 imperfect and partially destroyed, long and narrow cone with large 

 imbricate scales. In the original description it is suggested that 

 the cone may have been borne by Pagioph/lkm, peregrinum 

 (L. & H,), but, as Carruthers' says, it is impossible to determine 

 the nature of the fossil from the published drawing. 



CONIFEKOUS WOOD. 

 a. Casts. 

 The occurrence of driftwood in the Liassic rocks of the 

 Dorsetshire coast has been mentioned by De la Beche ''■ and other 

 authors.' The specimens occur in the form of casts, many of 

 which present the appearance of petrified wood, but unfortunately 

 the internal structure has not been preserved, and microscopical 

 examination is not possible. Several pieces of branches have been 

 found which reach a length of three or four feet ; with the casts 

 are often associated the shells of Ammonites, and these occasionally 

 occur attached to the surface of the fossil wood.* The branches 

 may belong to the tree of which the smaller twigs are known 

 as Pagiophyllum peregrinum, but we lack the necessary data for the 

 determination of the leafless casts. 



V. 334. Text-fig. 4. A branched specimen 4 feet 6 inches in 

 length in association with ^gooeraa planioostatum, Sow. 



Lyme Regis. History unknown. 



Other specimens from I/yme Regis and elsewhere : — V. 171, small 

 piece of wood from Whitby, Yorkshire. V. 1073, a large branched 

 specimen, 45 cm. in length, from Lyme Eegis. V. 4078, two large 

 pieces, one of which bears several branch-scars ; Lyme. V. 4079, 

 V. 4080, Lyme. 10,354, fragment from Charmouth, Dorsetshire 

 {Mantell Coll.). 11,235, fragment from Litchborough, Northampton- 

 shire {Mantell Coll.). 11,255, Charmouth {Mantell Coll.). 18,403, 



' Carmthers (66). 

 « De la Beche (24). 



' Parkinson (11), p. 375 ; "Woodward (93), p. 8. 



* For a figure of a piece of Liassic driftwood (specimen No. 52,894) bearing- 

 a shell of ^goceras planicostatum, see Seward (98), p. 61, fig. 7. 



