74 



THE GEOLOGIST. 



New Fossils from Skidd aw Slates. — Sir, — I think it is worth while to call 

 the attention of your readers to a new and very interesting locality for fossils — 

 in the celebrated Skiddaw slates. Mr. Bryce Wright, of 

 Russell-street, who is well known in the natural history 

 trade, devotes some time annually to collecting them : and 

 he has a store on hand, from the neighbourhood of Keswick, 

 New Crustacean from 0 f the Q ra ptolites Sagittarius, G.latus, 67. tenuis; also a new 

 SMddaw-slates. Crustacean form allied to Bithyrocaris, very abundant. 

 Lastly, he has discovered — and we owe him many thanks for doing so — the 

 branched GraptoKtes (which Sir W. E. Logan first brought to light in Canada), 

 of this shape. 



Prof. J. Hall considers them only to belong to the genus GraptoHtes, which 



has a simple stem with one row of cells, 

 ^ga ^ /^-^^ Bllt this is cer t a uily no t the case, for 



the true simple Graptolites are perfect 

 from end to end. I shall shortly, I 

 hope, describe the new branched dichotomous form under the name of Dichograp- 

 sus; meanwhile I think I am doing some service by calling the attention of those 

 living near the Skiddaw slates to the unexpected riches of that formation. 



Trails of worms (and those abnormal things called fucoids), are abundant 

 enough everywhere in them. But no good list has yet been published ; and the 

 formation is almost a virgin one for explorers. 



Can no one find the Lingula flags on the flanks of the Saddleback ? We are 

 beginning to disbelieve in metamorphic rocks being unfossiliferous. — Yours truly, 

 J. W. Salter. 



Geological Glide to the Onny Valley. — In commencing a geological 

 trip up the Onny Valley, the most convenient place to start from is the 

 Craven Arms, a station on the Shrewsbury and Hereford Railway; and 

 taking the turnpike-road towards Shrewsbury for about a mile, a stile is 

 reached on the left hand side, whence a foot-path leads across a field near 

 the bridge over the Onny River. Proceed along this path about three 

 hundred yards and cross over the railroad, then turn down to the river 

 and follow up the stream to the top of the meadow — the Wenlock shale may 

 there be observed exposed in the river bed, and if the water is low some 

 fine specimens of P ha cops lo?igicaudatus may be procured, together with 

 Cah/mene tuberculosa, Cardiola interrupt a, Loxonema elegans, Orthoceras subun- 

 dulatum, Beyrichia tuberculata, and Graptolithu.s priodon. The most prolific 

 beds are jus! below the fence, close to the left hand bank. Keep on up the 

 side of the brook until arriving at a foot-bridge, which cross and immediately 

 go into the field above ; nearly at 1 he further end is the celebrated " Onny 

 Seel ion," showing the lower members of the Wenlock shale, (or Purple Beds,) 

 the Llandovery or Pentameras limestone, and the upper beds of the Caradoc 

 sandstones, lying nearly conformable, and in one continuous section. 



From the Wenlock shale has been procured Chekurus bvmucronatm, Encrinurus 

 punctatuSj E. rariolaris, a new trilobite ; Orfhis biloba, Beyrichia tuberculata, 



