JET. 48.] ST ACHEUL. 161 



seams of sand similar in composition, and containing the same 

 fresh-water shells as the sand above. The top brick-earth and 

 gravel I feel disposed to attribute to some more active and power- 

 ful agency. I think, with you, that St Koch and St Acheul can- 

 not be separated by material interval. (The hippopotamus tusks 

 from the former place adhere strongly to the tongue.) M. Pinsard 

 has sent me the levels of St Acheul. I hope you find your winter 

 quarters pleasant and suitable, and hoping shortly to hear from you, 

 I am, my dear Falconer, very truly yours, J. PRESTWICH. 



I have just returned from a month's journey in the West. 



J. Prestwich to H. Falconer. LONDON, 27th December 1860. 



MY DEAR FALCONER, I wrote you a short time since to ask 

 your permission to give an abstract or extract of your last letter 

 to me, referring to the elephant remains at St Acheul and St 

 Eoch. I enclosed also a copy of that portion of your letter which 

 bears on the subject. I could either give your information in 

 the form of a short paragraph in the Appendix, or, as the revise 

 is still in my hands, I could add the E. antiquus to the list of St 

 Acheul organic remains, with a note stating it was on your auth- 

 ority: probably this would be the better way, as it would be 

 more certain to be seen. I wait, however, your sanction before 

 taking either step. As I expect I shall shortly have to give in 

 the last revise, would you be so kind as to oblige me with an 

 answer at your early convenience ? 



I understand that remains of the hippopotamus have been 

 found this autumn at St Acheul. I have not yet been able to 

 see the specimen, which is in Mylne's possession. 



Boucher de Perthes writes me word that he has now found 

 several specimens of the Cyrena consobrina at Menchecourt. He 

 also asks whether you are in town, and [says] that he was looking 

 for a visit from you this fall. 



We have had several hard Scotch papers this session, and with 

 a further store in reserve. Nothing yet bearing upon the super- 

 ficial deposits. 



The weather here has been very severe for the season. My 

 thermometer marked 9 at 8 A.M. on Christmas day. I trust you 

 are enjoying a mild and pleasant winter, &c. . . . 



L 



