412 The Rev. W. D. Conybeare on the Discovery 



2. A stone thatfell on t!ie 30th of March 1818, at Zabor/.yca, 

 and which, not containing globules like the foregoing, could 

 be easily pulverized. 



Laugier found in 1 00 parts, 



Oxide of iron 45*00 



Silica 41-00 



Magnesia 14'90 



Sulphur 4-00 



Lime 2-00 



Nickel 1-00 



Alumina 0'75 



Chrome 0-75 



Trace of manganese 



1 09^40 



LXV. On the Discovery of an almost jperfect Skeleton of the 



Plesiosaurus. Bij the Rev. W. D. Conybeare, F.R.S. 



M.G.S.* 

 T AM highly gratified in being able to lay before the Society 

 •* an account of an almost perfect skeleton of Plesiosaiirtis^, 

 a new fossil genus, which, from the consideration of several 

 fragments found only in a disjointed state, I felt myself autho- 

 rised to propound in the year 1821, and which 1 described in 

 the Geological Transactions for that and the following year. 

 It is through the kind liberality of its possessor, the duke of 

 Buckingham, that this specimen has been placed for a time at 

 the disposal of my friend Professor Buckland, for the purpose 

 of scientific investigation. 



At the period of my former communications it was natural 

 and even just that in the minds of many persons interested in 

 such researches, much hesitation should be felt in admitting 

 the conclusions of an observer who was avowedly inexperienced 

 in comparative anatomy; and there might have then appeai'ed 

 reasonable ground for the sus})icion that, like the painter in 

 Horace, I had been led to constitute a fictitious animal from 

 the juxtaposition of incongruous members, referable in truth 

 to different species. But the magnificent specimen recently 

 discovei'ed at Lyme has confirmed the justice of ni}' former 

 conclusions in every essential point connected with the organi- 

 zation of the skeleton. 



The only material error which I have to correct relates to 

 the bones which I supposed to be the radius and ulna: but 



* From the Geological Transactions, Nuw Scries, vol. i. 



•|- Some philological objections having beco .maJc to the coniposition 

 of the word Plesiosaurus, 1 brg to state that it is fbrniccl on tl)e very sr.me 

 principleas the words Inuyytfju Iw^sj-Sjorjilvc/all of appro veil ckii-sicai use. 



with 



