27i REPORTS ON THE STATE OP SCIENCE. 



The supposed fucoids of which lithographs were published in Liverpool 

 about 1837-1841 ' were very probably casts of stream courses. It is 

 unfortunate that the originals are not to be found, unless the branching 

 form in the Bootle Museum be a portion of one, neither is the original 

 of DictyophyU'um crassinervium figured in Murchison's ' Silurian System ' ^ 

 accessible. 



A very singular marking, bearing a distant resemblance to a mass of 

 coarse fibre, has been noticed in relief on the underside of several slabs 

 from Stoi'eton.^ It consists of a patch of fine sharp ridges, or rugae, 

 curved or waved, seldom rectilinear, tending to lie in one direction but 

 occasionally crossed by others. 



Such markings occur most frequently in irregular patches of a few 

 inches area, but in some cases they take the form of groups of truncated 

 oval masses in low relief. The ovals vary slightly in size in each group, 

 but they measure about 10 cm. by 6 cm. and rise in the centre about 

 1 cm. above the general surface of the stone. The ridges are roughly 

 triangular in section and from 1 mm. to 3 mm. in width. They are 

 arranged with a certain symmetry on each side the long axis of the oval, 

 the broadest part of each ridge is nearest the round end of the oval, of 

 which the margin is clearly defined ; the finer extremities of the ridges 

 seem to diverge somewhat at the truncated end, and there is no defihed 

 margin. The ridges are rather irregularly disposed, being in some cases 

 in actual contact and in others 50 mm. apart. The ovals themselves are 

 grouped irregularly, generally more or less overlapping one another. One 

 group is large enough nearly to cover a surface 50 cm. by 35 ^m. 

 (Plate VI., fig. 2). 



In another instance there is an irregular mass covering several 

 square feet of surface with no defined arrangement of ridges and 

 no definite margin. Adjoining it there is a single oval similar to those 

 described, but rather larger. On the same slab are sundry other smaller 

 patches and a great variety of footprints. 



It is at present impossible to judge whether these markings be of 

 animal, vegetable, or inorganic origin. 



Descripiion of Plates. 



Plate V, Fia. 1. — Invertebrate Tracks from North Quarry, Storeton. One-third 

 natural size. (In J. Lomas's Collection.) 



Plate V, Fig. 2. — Natural casts of Fragments of Plants from Flaybrick, Birken- 

 head ; in relief. (In H. C. Byasley's Collection.) 



Plate VI, Fig. 1. — Natural casts of Stream Courses simulating plant forms, 

 probably from Storetou. (No. 7 in Bootle Museum Collection.) By kind 

 permission of the Bootle Museum Authorities. 



Plate VI, Fig. 2. — Group of oval patches of Matted Rugae from Storeton ; in low 

 relief. (lu H. C. Beasiey's Collection.) 



List of British Triassic Fossils in the Warwick 3fuseum. 

 By H. A. Allen. 



The Warwick Museum possesses the grexter part of the Labyrintho- 

 donts found in this country. The specimens were obtained from the 

 neighbourhood of Warwick, and were presented by Dr. Lloyd, Mr. 



' See Proo. Liv. Oeol. Soc, vol. ix. p. 286, for description of lithographs. 

 ^ Part 1., p. 43. Also Liudley and Hutton, Fosdl Flora, vol. iii. plate 201. 

 ' See 1904 Report, Plate VIII., for two small patches. 



