349 
tional apparatus will be required, but, on the contrary, the 
great power and activity of the ferruginous peat will enable 
any such purifiers to perform twice as much work as they 
can now do with slaked lime. 
" As the result of a series of experiments, I have found that 
18 bushels of ferruginous peat can purify 200,000 cubic feet 
of impure Newcastle coal gas, and upon merely blowing a 
current of air through the purifier for a few hours, the 
material becomes again fit for use, and may thus be employed 
an almost infinite number of times in succession. At one 
Gas Works I have witnessed its repeated use in this way for 
six months, without being able to discover any alteration in 
its purifying properties. 
"Its effects are limited to purification from the sulphuretted 
hydrogen and ammonia, so that in some cases it may be 
requisite to use lime also for the removal of the carbonic acid 
of the gas. With this proviso, I express my confirmed opinion, 
that ferruginous peat is the most efficacious non-nuisance 
creating material yet offered to gas companies, and as such I 
recommend it to their attention for the purpose of purifying 
gas." 
There is no smell nor nuisance when the purifying vessel 
is being emptied, and the peat, when it has done its work at 
the gas works, is worth twice its original cost from the quan- 
tity of sulphur it contains ; it is purchased by the manufac- 
turers of sulphuric acid. 
In a sanitary point of view the process is most valuable, 
so absorbing and deodorising is this material, that where it 
is used throughout the various departments of the gas 
establishment, there is no smell whatever from the works. 
APPLICATION OF PEAT TO THE DISINFECTION OF SEWAGE, &C. 
The same peats which prove efficacious in effecting the 
purification of gas, will also prove effective in deodorising and 
