ABSTRACT
Hydrogen nuclei are ejected from the elements boron, nitrogen, fluorine, sodium, aluminium, and phosphorus by bombardment with α-particles. In these experiments the material subjected to the bombardment was placed immediately in front of the source of α - particles and observations of the ejected particles were made on a zinc sulphide screen. A powerful beam of α-rays falls on the material to be examined and the liberated particles are observed at an average angle of ∠to the direction of the incident α-particles. By means of screens it is arranged that no α-particles can fall directly on the zinc sulphide screen. A preliminary examination of the elements from calcium to iron, but with no definite results, owing to the difficulty of obtaining these elements free from any of the 'active' elements, in particular nitrogen. It is observed no effects from the following elements: nickel, copper, zinc, selenium, krypton, molybdenum, palladium, silver, tin, xenon, gold, and uranium.
