JET. 51.] GEOLOGICAL EXCURSIONS. 191 



member would see to his own. I foresee trouble enough with 

 the difference of opinion on the main question, but I should be 

 very sorry to see other causes of differences with the French 

 members introduced. I wish to have no share or part whatsoever 

 in the contemplated publication. As I told Delesse, I had little 

 to alter or comment upon. My opinions are fairly represented, 

 and subsequent events I have recorded as far as I wish to record 

 them in the ' Athenaeum ' and at the Geological Society. With 

 you it is different. You wish, if I understand rightly, to show 

 that your protest implied more than the P. V. gives, and you 

 amplify your reasons. At what time do you meet on Sunday 

 morning ? I will try to be present, altho' my head and hands 

 are full of other matters at present, as my partnership here 

 shortly expires, and the question of renewal is just now under 

 discussion. I had some idea of going to the Scotts at Walton. 

 If I don't, I will make a point of calling on you on Sunday 

 morning. And I am ever truly yours, Jos. PRESTWICH. 



J. Prestwicll to H. Falconer. ' 2 SUFFOLK LANE, 2th June 1863. 



MY DEAR FALCONER, Thanks for your note and enclosure. 

 I know Lexden, near Colchester, very well. I have visited it 

 several times, both alone and with John Brown. The fossils are 

 not found in a bed of true peat, but in a carbonaceous bed a foot 

 thick, [such] as occurs occasionally at Grays, but more especially 

 like the Mundesley bed. It is overlaid by loess. . . . 



On the 18th July Prestwich was again out on a 

 geological tour, beginning with Whitchurch and in- 

 cluding eighteen different localities, ending with Port- 

 land Bill, &c. Later on he was at Thame, and on 

 September 6th he was working out the district round 

 Grayshot, near Haslemere, and Heigate. 



J. Prestwicll to J. Evans. LONDON, lith Sept. 1863. 



MY DEAR EVANS, ... I am thinking of running down to 

 Newmarket to-morrow evening, and back on Monday morning. / 

 must revise, if possible, my sections of Bedford, Icklingham, Herne 

 Bay, and the Waveney Valley for my Philosophical Transactions 



