7 IS PHILOSOPHICAL TRANSACTIONS. [aNNO 1702. 



tophi bovini are ; and seemed within of the same substance with the former in 

 different layers on a phim-stone. 



Dr. George Thompson, in his Experimenta Admiranda, p. 67, gives a large 

 account of a ball which had been voided by a patient, after a great fit of illness, 

 of the same size, and in appearance of the same substance with the former : 

 that author tells us it had several plum and cherry-stones in it. These balls 

 seem to be formed something after the manner of bezoars, which generally 

 have some seed for their centre or nucleus, on which coats of another substance 

 are gathered. 



These instances are sufficient to show the folly of that common opinion, that 

 the stones of fruit are wholesome : for though, by nature the guts are so de- 

 fended by the mucus intestinalis, that very seldom people suffer, yet if we con- 

 sider the various circumvolutions of the guts, their valves and cells : and at the 

 same time consider the hair of the skins of animals we feed on, the wool or 

 down on herbs and fruit, the fibres, vessels, and nerves of plants, which are 

 not altered by the stomach, Uic c^me case may very easily happen. I once saw 

 as strange a distemper, and almost as obsuuaic anri ]ong as I ever met with, 

 proceed from a great quantity of strawberry seeds, which had luagwl in the guts, 

 and after their discharge the person was eased. And I have heard of many be- 

 sides those published, who have lost their lives by swallowing a quantity of 

 cherry-stones. 



Concerning the Vestigia of a Roman Town lately discovered near Leeds in 

 Yorkshire. By Mr. Thoresby, F. R. S. N° 282, p. 1285. 



The vestiges of a Roman town are to be seen on the moor near Adel Mill, 4 

 miles from Leeds. They were discovered accidentally by a farmer, who ploughing 

 part of his farm, was retarded by a great quantity of stones, immediately below 

 the surface of the earth, which he was obliged to dig up before he could proceed, 

 and has already out of the foundations of houses, which have been traced on 

 both sides the street, got so many stones as has built above 100 rods of walling. 

 At a very little distance is a Roman camp pretty entire : it is above 4 chains 

 broad, and 5 long, surrounded with a single vallum, which from the top of the 

 agger to the bottom of the trench, is still 22 feet deep, in the place I measured. 

 The town seems to have been of considerable note, by the inscriptions, and 

 fragments of statues, pillars, &c. dug up there, all which (as Dr. Lister has truly 

 observed, of most of the Roman monuments in these parts) are made of the 

 common sort of coarse rag, or millstone grit, of which are also the remains of a 



