Smelting Company Research Articles

The Physical Chemistry of the Metals . By Rudolph Schenck, Professor of Physical Chemistry in the Technischen Hochschule in Aachen. Translated by Reginald Scott Dean, Research Metallurgist, American Zinc, Lead and Smelting Company. New York. John Wiley and Sons, Inc. 1919. VIII + 239 pages.

<i>The Physical Chemistry of the Metals</i> . By Rudolph Schenck, Professor of Physical Chemistry in the Technischen Hochschule in Aachen. Translated by Reginald Scott Dean, Research Metallurgist, American Zinc, Lead and Smelting Company. New York. John Wiley and Sons, Inc. 1919. VIII + 239 pages.

A New Leaf-Spot Disease of Polygonum Persicaria

In July of I914 and August of I916, Mr. W. W. Jones, botanist in the department of agricultural investigations, American Smelting & Refining Company, made collections of Polygonum persicaria L. showing an apparently new leaf-spot. An examination of the literature indicates that this leaf-spot disease has not been previously noted and that the organism is an undescribed species of Septoria quite different from the species of Septoria described as occurring upon Polygonum or related genera. From field observations it would seem that this type of leaf-spot is rather rare, only two small collections having been made as noted above. The description of the species is as follows:

House of Lords. St. Helen's Smelting Company v. Tipping

House of Lords. St. Helen's Smelting Company v. Tipping