VOL. XLIV.j PHILOSOPHICAL TRANSACTIONS. 27Q 



he was taken on the road with symptoms of violent pain, and wanted to lie down 

 however, the carter drove him home; but, as soon as he had unharnessed him, 

 the poor creature was seized with a great shaking, and dropped down dead im- 

 mediately. On stripping him, the man observing a swelling in his belly, opened 

 it, and found in the colon a very large stone, but presently broke it in pieces. 



Dr. B. did not hear of this stone till the latter end of last summer, when a 

 gentleman showed him a fragment of it ; which excited his curiosity to go to the 

 mill where the horse died, to inquire for the remains. He found several pieces 

 of it, weighing in all ] lb. 64- oz. Troy. Some of them had been kept dry in the 

 mill, but the greatest part laid abroad mixed with rubbish; which, though ex- 

 posed to the weather above 12 months, was not much altered, being only a little 

 more brittle than the rest, and somewhat mouldered on the outside. About a 

 fortnight since, another piece of the same stone was brought to him, weighing 

 about 8 oz. Troy, containing near half the nucleus and the innermost lamina 

 cohering together. 



From all these fragments, and the description of the stone given by those who 

 saw it, before it was broken in pieces, it appears to have been of a spheroidal 

 figure, about \6 inches in circumference, consisting of a nucleus and several 

 laminae or shells involving each other ; some of them are parted, but the rest 

 adhere so close together, that they cannot be separated without breaking. All 

 the laminae are composed of transverse striae, with their points converging like 

 rays towards the centre of the nucleus. They are of a brown colour, and shine 

 like resin. The nucleus is of an oval figure, and differs but little in its com- 

 position from the rest of the stone, having no other extraneous matter in it be- 

 sides a few pieces of straw, and small sticks, like the twigs of a broom ; some of 

 them appear intermixed with the striae throughout the body of the stone. The 

 external surface of the stone, and those laminae that have been exposed to the air, 

 look of an ash-colour, are pretty even, but not very smooth, having many small 

 holes in them. 



About the beginning of last July, 5 large stones were found lying near each 

 other in the intestines of a mare, which belonged to a carrier, who had worked 

 her several years in his team. She was in good case, and always appeared to be 

 sound and healthy ; till one morning, being at grass, she was found lying on the 

 ground in a great agony of pain, with which she was continually tortured for about 

 6 hours, without any relief from various remedies which were applied : at last she 

 got up, and ran about the field like a mad creature, till she died. 



Dr. B. had seen only 2 of the stones which were taken from her; one of a 

 triangular shape, the other oblong, a little depressed in the middle, bearing some 

 resemblance to a horse-bean. They are both similar in substance, and seem to 

 be of the bezoar-kind, being of a closer texture than that above described, are of 



