622 The Trials of Christ Mills and Disintegrators at Plymouth. 
The machine was first set to work on 5*125 cwt. of bones, 
which it disposed of at the rate of 19 cwt. per hour, making 
rather coarser work than the " .Devil " and Harrison Carter had 
done, but producing a satisfactory sample for farmers' use. 
Meanwhile, the power absorbed was very moderate, while no 
rejections of material were made by the attendant. It was, 
indeed, a remarkable sight to watch, as might be done in this 
case, the toothed rollers crunching up huge horse heads and 
shoulder blades as if they relished the gruesome meal. 
The second trial took place on cotton-cake, of which 5*8 cwt. 
was reduced to small fragments, rather than powder, as in the 
W. JV. Nicholson & Son's Second Pri~e Bone Mill and 
Disintegrator. 
other cases, at the rate of 21 cwt. per hour, the sample being, 
again, quite satisfactory for feeding purposes, although not 
finely ground. 
Nicholson's machine, ii not a disintegrator in the same 
sense as the "Devil," is, undoubtedly, capable of dealing very 
satisfactorily with such materials as bone and cake, though it 
would altogether fail in producing manure, as the " Devil " does, 
from town refuse. In economy of power the machine, indeed, heads 
the list (see Table VI. opposite), but in " general adaptability for 
reducing various substances " it lost many points, yet came 
easily into the second place. Meanwhile, the differences in 
character and function between the first and second prize 
