Artillery Officer Research Articles

HERMANN VON HELMHOLTZ—THE INVENTOR OF THE OPHTHALMOSCOPE.

<h3>Vormals im Leben ehrten wir dich, wie einen der Goetter, Nun du todt bist, so herrscht über die Geister dein Geist.</h3> Quite apart from the interest that is naturally excited by the life-story of the great scientist who invented the instrument that revolutionized the science and art of ophthalmology, there are, at least, two reasons why this gathering should be especially interested in the life of Hermann Ludwig Ferdinand Von Helmholtz. In the first place it was as a student and practitioner of medicine that he entered upon those studies that carried his name and spread his fame throughout the world of science. Then, in the second place, there coursed in his veins the bluest of American blood. His mother was the daughter of a Hanoverian artillery officer named Penne, a direct descendant of William Penn. It is more than possible that the calm, thoughtful spirit which distinguished all the

The 43-Ton Gun Explosion

THE bursting of the 43-ton gun on board the Collingwood has naturally attracted considerable attention from men of science as well as from the general public, and it may not be out of place at the present time to compare the ideas of scientific men with the data given in text-books published by authority and put into the hands of artillery officers for purposes of instruction.