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a core dips into the tin, which remains liquid in the cavity, 
whilst this outer tube forms the core of another tube 
through which lead is forced, the innermost core being 
prolonged, so that the tin comes in contact with and 
solidifies on the interior of the lead pipe. It seemed to 
me remarkable that a manufacturer who was cognisant of 
the fact that tin dissolved lead should have allowed such a 
device as the pouring of the tin down a strip of lead to be 
employed for filling the mould. 
These tin-lined lead pipes, I understand, are. used to a 
large extent, and principally in making communication 
between the beer in the cask and the pump on the counters 
of beer retailers. Such pipes would give the idea of safety, 
but it is clear that many samples of it may be of such a 
nature as to contaminate beer with lead to a large extent, 
as the beer contains a certain amount of free acid which 
would in all probability be capable of dissolving the lead ; 
and one would expect that the person who consumes the 
first glass of beer from the pump in the morning would get 
that which had remained over night in the pipe, and would 
imbibe, therefore, a considerable quantity, depending on the 
quality of tin lining, of the poisonous metal. 
To test whether this was really the case, a few days ago 
I got two samples of beer, drawn in the morning, from two 
pumps at the same place, and examined them, and found a 
considerable proportion of lead to be present in each. To 
find whether it was possible to obtain tin-lined lead pipe, in 
which the tin was free from lead, for making communication 
between the house and well above mentioned, I obtained a 
number of samples of this variety of pipe from the same 
and from different manufacturers, and tested the purity of the 
tin lining inside each, but failed to find one which was not 
contaminated with lead, and which did not contaminate 
water when left in contact with it for two or three days to 
a greater or lesser extent; one or two samples, however, 
