_E,_ Here we observed something like bone to stretch from the _vertebræ_, and intending to take it up whole, begun to cut at what we thought a proper distance; but found we cut thro’ a bone; and with the _vertebræ_ brought up three or four inches of the _os femoris_, with the ball, covered with the _periosteum_: but the animal has been so crushed hereabouts, that we could make little of the socket or _os innominata_. Several of the ribs came up with the _vertebræ_: they were broke, and laid parallel to the _vertebræ_; but not quite close, there being some of the rock between them. The _periosteum_ is visible on many of the bones. _G_, _H_, Twelve _vertebræ_ remaining in the rock, with which they are almost covered, especially towards the extremity. The place, where these bones lay, was frequently covered with sea-sand, to the depth of two feet, and seldom quite bare; which was the occasion of their being rarely seen: but being informed that they had been discovered by some people two or three years ago, we had one of them with us upon the spot, who told us, that when he first saw it, it was intire, and had two short legs on that part of the _vertebræ_ wanting towards the head. Altho’ we could not suspect the veracity of this person, we thought he was mistaken; for we had hitherto taken it for a fish. But when we took it up, and found the _os femoris_ above-mentioned, we had cause to believe his relation true, and to rank this animal amongst those of the lizard kind: by the length (something more than ten feet) it seems to have been an allegator; but I shall be glad to have thy opinion about it. I am thy friend, William Chapman _Sen._ _The bones were sent up, and are herewith presented to the Royal Society by_ J. Fothergill. XCIII. _De rariori quadam_ Orthoceratitis _Specie, in_ Suecia _reperta, tractatus; in literis a_ Nicholao de Himsel, _M. D._ Riga Livono, _ad_ Gul. Watson, _M. D. R.SS._ [Read May 11, 1758.] ORthoceratiti recti in loco quodam Kelwika dicto, prope Fahlunam in Dahlia, reperti. Inhærebant lapidi cineracei coloris calcareo, variæ magnitudinis orthoceratiti, quorum portiones hic delineatas describo. _Vide_ TAB. XXIII.