NOTES AND QUERIES. 



NOTES AND QUERIES. 



Flint Impleiments at Aylesford, Kent. — Sir, — A few weeks since, a 

 friend of mine picked out of some river drift which had been dredged from 

 the Medway near to Aylesford, a most highly-finished flint hatchet. I am 

 sorry to say I fear we shall lose it for our museum, as the finder is going to 

 take it to Oxford. I have not had the luck to get a specimen, but hope to do 

 so, as that elevated bed of ancient river-drift at the back of Aylesford church 

 ought to yield some. — Yours, &c, W. H. Bensted, Maidstone. 



Euomphalus carinatus. — Dear Sir, — Last month the Liverpool Geolo- 



fical Society made an excursion to the Silurian district of Coalbrookdale, 

 uring which many interesting fossils were obtained. From a quarry of Wen- 

 lock limestone on Benthall Edge, I obtained a finely -preserved specimen of 

 Euomphalus carinatus, retaining a considerable portion of the shell. My reason 

 for calling attention to this fact is that I cannot ascertain that this shell has 

 been discovered in the Wenlock series before. Both in " Siluria" and Pro- 

 fessor Morris's " Catalogue of British Fossils," it is mentioned as occurring 

 in the Aymestry Limestone. Perhaps, if you consider these remarks worthy 

 of insertion in the " Notes and Queries," some one of your numerous readers 

 will inform me whether this shell has hitherto been met with in the Wenlock 

 Limestone. — Yours, &c, W. S. Horton, Liverpool. 



Native Coke in Moravia. — Native cokes have been found at Mahrisch- 

 Ostraw (Moravia), at a depth of about two hundred and eighty feet, along the 

 line where one of the coal-beds worked there is in contact with eruptive rocks. 

 The metamorphic action has penetrated into the coal to a depth of three or 

 four inches. A similar occurrence was observed in 1856 in the coal-beds of 

 Witkowitz, partially altered into cokes by the contact of greenstone. 



REVIEWS. 



" Proceedings of the Geologists 1 Association" No. 7. 



The seventh number of these Proceedings has reached us, and it is with 

 pleasure we remark, not only an improvement in the diction and printing, which 

 would indicate that the matter has received some editorial care, and has been 

 passed under some competent eye, but there is an improvement also in the 

 quality of the papers themselves. In the first paper our old friend Mr. 

 Wetherell, who for so many years has done so much good work in looking over 

 little things, treats " On the Opercula of Ammonites in Flint Pebbles from 

 the Gravel of Whetstone." In all strata containing ammonites the trigonellites 

 should naturally be expected to be met with — as indeed they are — for to suppose 

 them rare is a mistake, as any one may prove by cracking off sideways pieces 

 from the mouth-edges of common grey-chalk ammonites, such as Am. varians, 

 Am. Mantellii, and Am. navicularis. What is most wanted to be done is some 

 one to spend his time in breaking up different species of ammonites and 

 figuring the kind of trigonellites which belong to each. Another of Mr. 

 Wetherell's papers printed is " On Oviform Bodies from the London Clay, 



