i 2 2 On the Aniniat Calculus. 
5>. Hence we fee how greatly the Antients 
were miftaken who generally attributed the 
Growth of the Calculus to mucofe, pituitous 
Matter, which is fometimes in great Plenty 
feparated from the fcrophulous Glands of the 
Bladder, but is not found to harden into a 
Calculus. 
10. It was the general Opinion of the 
Learned in Beveroviciufs Time (who pub- 
liflied what they wrote to him on that Sub- 
jeft about a hundred Years fince) that the 
Matter of the Calculus was a pituitous vifeid 
Matter, caufed by the ill difpofed Kidney, 
and hardened by the Heat of the Bed. But 
Helmont in his Treatife de Lithiafi^ juftly 
explodes' this Notion, and denies the Calculus 
wdiich he calls Duelech to be owing to any 
vifeid Matter for the following Reafons, viz. 
11. He fays the vifeid Matter, which is 
fometimes found in thofe who have a Scone 
in the Bladder, arifes from the Mucilage which 
the Stone rubs off the Bladder 5 for when the 
Calculus is cut out of the Bladder, there is 
no more vifeid Matter in the Urine : ThSc 
if it arofe from this Miicus^ the Bladder would 
foon be filled with a Calculus : That this Mu- 
cus dried, makes only a little Chalk Stone^ 
3 like 
