MancJiester Memoirs, Vol. xlv. {igoo), No. 1. 9 



manufacturers can work under, and which shall be low 

 enough to be effective, may be adopted with as little delay 

 as possible. To sum up, I have claimed that, for the manu- 

 facture of English pottery, lead is an essential ingredient of 

 the glaze. To dispense with the use of lead would cause 

 such an alteration of the manufacturing conditions 

 that English pottery, as we know it, would cease to exist. 

 I contend, further, that, retaining the use of lead, it is still 

 possible to diminish the plumbism to the vanishing point 

 by due attention to the safeguards I have mentioned. 

 While the partial operation of the mechanical and medical 

 safeguards has done a great deal, we must adopt, in 

 addition, and make imperative, the general use of lead 

 compounds of lower solubility than those in general use at 

 present ; and then we may hope to turn the last page in 

 this painful and troublesome chapter of industrial disease. 



