and through the machine for stamping, and that it can be disengaged for
a reheating before passing to subsequent operations.

* * * * *

The bog peat of Mexico is now being used on a considerable scale as fuel
for locomotives, stationary engines, smelting purposes, smiths' fires,
and househould use. The peat is mixed with a proper proportion of
bitumen, and is said not only to burn freely, and without smoke in much
quantity, but to give a higher dynamic equivalent of heat than the same
amount of wood.

* * * * *




THE BITTER SUBSTANCE OF HOPS.

[Footnote: _The Brewers' Guardian_, from the _Zeit. f. d. gesammte
Brauwesen_.]

By DR. H. BUNGENER.


Little that is definite is known of the substance or substances to
which the hop owes its bitterness. Lermer has succeeded, it is true, in
separating from hops a crystallized colorless substance, insoluble in
water, an alkaline solution of which has a marked bitter flavor, and
which easily changes on exposure to the air, assuming a resinous form.