536 Discovery of a nearly-entire Dimorphodon. 



Since my first visit to the section, my colleague, Mr. CroU, has 

 examined the dejiosits, and agrees with me in assigning them to the 

 Lower Boulder-clay. And I learn through him, that Mr. Bennie, 

 of the Glasgow Geological Society (than whom no one is better 

 acquainted with the superficial deposits of the neighbourhood of 

 Glasgow), had seen the section before the appearance of my short 

 "note" in the Magazine, and had come to- the same conclusion as I 

 did ; nor, on a second visit, has he seen any reason to change his 

 opinion. Jas. Geikie. 



Loudoun Hill Inn, Dawel, Kilmarnock, \2th October, 1868. 



THE PLEISTOCENE FRESHWATER DEPOSIT AT HACKNEY DOWNS. 



Sir, — Having had my attention directed to a letter by Mr. G. J. 

 Smith in your last number, which imputes inaccuracy to Mr. A. Tylor 

 and something worse to Mr. Skertchly, I think it my duty to explain 

 the matter. 



The locality was pointed out and some shells were given to me by 

 Mr. Skertchly. Those shells I took to Mr. Smith, an old friend of 

 mine, and we appointed a time and went together to visit the spot. 

 This was his first visit to the place ; afterwards he made other visits 

 in company with Mr. Baily. Mr. Smith is right when he says he 

 does not know Mr. Skertchly, but I have no doubt he can make a 

 pretty shrewd guess as to who he is ;. for, if his memory has not 

 failed him, he must know that I informed him from what source I 

 obtained them. Alfred Gkugeon. 



Dalston, October 16fh, 1868. 



nvcis CE Xj Xi-iA^isriEOTJS . 



Important Discovery of Eemains of Dimorphodon macronyx 

 IN THE Lower Lias of Lyme Eegis, Dorsetshire. — In the month 

 of March last a remarkable Fossil was forwarded by Henry Marder, 

 Esq., M.K.C.S., to the authorities of the British Museum. It con- 

 sists of the entire caudal series of vertebraa of a Pterosaurian having 

 a close resemblance to the tail of a Bhamphorhi^nGhis from the 

 Lithographic stone of Solenhofen. The entire series of vertebrse, 

 which are long and slender, is 20J inches. In August last the Earl 

 of Enniskillen reported to Mr. Waterhouse (the Keeper of the Geo- 

 logical Department) that he had seen, at Mr. James W. Marder's, at 

 Lyme Eegis. a ver}^ perfect specimen of Pterodactjde. This beauti- 

 ful fossil (which proved to be an almost entire example of Dimor- 

 2)hodon macronyx) has now been secured for the British Museum, and 

 Professor Owen, the Superintendent of the Natural Histor}^ Depart- 

 ments, is engaged in its description. The point of greatest interest 

 in this new fossil, is the evidence it furnishes that the caudal series, 

 above noticed, really belonged to the Dimorpliodon, a portion of a 

 tail having the same slender, elongated, hour-glass-shaped centra to 

 the vertebrae, and embedded in similar ossified fibres, having been 

 found associated with this remarkably perfect skeleton of Dimor- 

 phodon. Professor Owen's paper will be looked forward to with 

 great interest. 



