An analysis of an average sample gave:

Per cent.
Manganese sulphide 28.01
Manganous oxide 20.23
Ferrous oxide 25.46
Silica 18.90
Alumina 5.00
Lime 3.53
Magnesia 0.43

The great convenience and certainty presented by the method described
in this paper will in all probability lead to its general adoption. As
a matter of fact, several works are now occupied with the installation
of this mixing and desulphurizing plant.

* * * * *




ON THE OCCURRENCE OF TIN IN CANNED FOOD.

By H.A. WEBER, Ph.D.


The following investigation of the condition of foods packed in tin
cans was prompted by an alleged case of poisoning, which occurred at
Mansfield, Ohio, in April, 1890. A man and woman were reported to the