Pacini studies were well known, appreciated and inserted in an international framework, and the CR discoveries in every case are due to the joint efforts of many people In Pacini notes and papers is well evident the logical path followed, based on the idea, reported in his first paper, that the radioactivity in the soil and in the air was not sufficient to explain the observed measurements of the air ionization However Pacini studies were scarsely supported in Italy by the scientific academy (i.e.