]76 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Julie 17- 



sea washed away a portion of the low bank which forms the boundary 

 of the shore a little to the west of Sandown Fort, so as to render the 

 section of the Weald Clay, which comes out at this point, per- 

 pendicular to the height of about 15 feet. This bed of clay lies 

 immediately above the ferruginous sandstone in which Dr. Buckland 

 discovered the metacarpal bone. About midway between the bottom 

 and the top of the clay-bank, I found, lying in a horizontal position, 

 a fossil bone of such unusual dimensions, that it appeared worthy of 

 notice, as being the largest of its kind yet recorded. It measures 

 four feet ten inches in its extreme length, and fourteen inches in 

 diameter near the centre. It has suffered much from pressure, but 

 is so far perfect, that Professor Owen, on inspection of a small clay- 

 model of the bone, pronounced it to be, in all probability, the 

 femur of an Iguanodon. Owing to the kindness of my friend Mr. 

 Tite, who happened to be at Sandown at the time, and assisted me 

 in some researches for further remains of the animal, which proved 

 fruitless, I am able to exhibit the drawing of the bone, of the actual 

 size, on the wall. 



The clay-bed in which the bone was found is near the centre of 

 the arch which, as is well known, is formed by the Wealden in 

 Sandown Bay, dipping slightly westward. "Where the same bed 

 occurs on the reverse, or eastern dip, at a distance of about half-a- 

 mile, large vertebrae and other portions of bone are frequently found, 

 but always much rolled and broken. 



On the Geology of the North-east part of the Doerutcha. 

 By T. Spratt, Captain R.N., F.R.S., F.G.S. 



On the Freshwater Deposits of the Levant. By T. Spratt, 

 Captain R.N., F.R.S., F.G.S. 



[The publication of these memoirs is unavoidably deferred.] 



