18G0.] LAETET FOSSIL INCISED BOM -. 4".") 



thing has occurred on the Continent, "where the same terrestrial fauna 

 has continued without any other modifications than the geographical 

 displacement of certain species and the final disappearance of Bome 

 others — disappearances that have resulted, not from a simultaneous 



destruction, but rather from a Belies of successive extinctions which 

 appear to have been equally gradual as regards space and time. 



I may add to what I have stated above, that the finding of 

 worked flints in the diluvium of Amiens and Abbeville is by no 

 means an isolated fact. M. Gosse of Geneva, a young medical stu- 

 dent in 1'aiis, has recently discovered in the sands of the Parisian 

 Suburb of Grenelle, of the same age as those of Abbeville and of 

 other parts of Europe, a Hint hatchet of a most distinct form, 

 together with knives or thin plates split in a longitudinal direction. 

 1 myself have had an opportunity of verifying these tacts in the col- 

 lection formed by that skilful explorer, lie has shown me an Ele- 

 phant's tooth, a canine tooth of a large Feline animal, and bon 

 the Aurochs, Horse, &o., all obtained from the same sands and from 

 game bed in which the Hint hatchet was found. 



I may add that, among the bones obtained in Switzerland under 

 the lacustrine habitations of the Stone Period (in the lakes of Moos- 

 dorf, Bienne, and others), there never have been found any remains 

 of the Megaeero8 t although the remains of the Elk, the Aurochs, and 

 the Bos primigenius ate by no means rare. \n Denmark, where 



still more ancient stations have been Carefully examined with the 

 same object, Prof, Stceiistrup has assured me that he ha-, never 



discovered the small, -; fragment of the Megaceroa in the midst of the 

 most abundant remains of the Reindeer, Elk, Aurochs, and other 

 species of animals which from time immemorial have not existed in 

 that region. Nevertheless these primitive stations in Denmark are 

 referred back to :i period when no other domestic animal existed in 



that country except the ]),,_;. Xo remains have been found either of 



the Elorse, sine]!, or Goat,— not even any kind of dwarf Ox, 



If. sir, you are of opinion thai the above notes, dr.iv, n ap in haste. 

 are likely to prove interesting to the Geological Society of London, 

 I should be happy if yon would submit them to the enlightened 

 judgment of your learned associates, and if they will receive them 

 at the same time as a mark of my di Ear* m e, and as a feebl 



.on of the profound gratitnde 1 Peal far the honour conferred 

 upon me by my name having been inscribed among tin 

 Members of thai s,„ i, n . 



'ition by Ou Pbj sum h i . 

 In the Goregoing communication, If. Lartel has referred to my friend 

 M. Delesse having shown mi I bone bearing illu- 



sions made by a sharp instrument, which he had reoentlj 

 in the neighbourhoi lb prese n ted me with on 



which he had suhmitted to the examination , | \| . 1 ;■ •. -ml which 



I now lay before the Society, together with the following oopj 

 note 1 I- , eived from M. D men : — 



. 2 



